Cast when Damage Taken Support

Cast when Damage Taken SupportSupport, Spell, Trigger
Icon: !
Level: (1-20)
Cost & Reservation Multiplier: 250%
Cooldown Time: 0.25 sec
Can Store 1 Use(s)Requires Level 38Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.This Gem can only Support Skill Gems requiring Level (38-70) or lower
Supported Skills deal (65-27)% less Damage
You cannot Cast Supported Triggerable Spells directly
Trigger Supported Spells when you take (528-3272) total Damage from Hits

Additional Effects From 1-20% Quality:
Supported Skills require (0.5-10)% reduced amount of Damage taken to TriggerThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.

Acquisition
Drop level: 38Vendor Offer
1x Scroll FragmentMetadata
Item class: Support Gem
Metadata ID: Metadata/Items/Gems/SupportGemCastOnDamageTaken

Cast when Damage Taken is a support gem. It causes a linked spell to trigger when the player takes a certain amount of damage from hits.

Skill functions and interactions

Trigger gem: Cast when Damage Taken supports spells. Multiple different spells can be supported, and each will have their own damage taken counter and cooldown. Multiple copies of Cast when Damage Taken will also function independently, as long as they don't support copies of the same active skill, which would cause a shared cooldown.

Damage counter and trigger cooldown: The Cast when Damage Taken gem itself does not have a counter or cooldown, only spells it supports do. Each supported skill has an internal damage counter that tracks the total accumulated damage taken from hits. Damage over time and non-damage loss do not contribute to this counter, i.e. you cannot use Righteous FireRighteous FireSpell, AoE, Fire
Level: (1-20)
Cooldown Time: 0.30 sec
Can Store 1 Use(s)
Cast Time: InstantRequires Level 16Engulfs you in magical fire that rapidly burns you and nearby enemies. Your spell damage is substantially increased while under this effect. The effect ends when you have 1 life remaining.Deals 70% of your Maximum Life as Base Fire Damage per second
Deals 70% of your Maximum Energy Shield as Base Fire Damage per second
You Burn for 90% of your Maximum Life per second as Fire Damage
You Burn for 70% of your Maximum Energy Shield per second as Fire Damage
Grants (20-39)% more Spell Damage
Base radius is (1.8-2.3) metres

Additional Effects From 1-20% Quality:
Base radius is (0.015-0.3) metresPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. to trigger Cast when Damage Taken. All damage counters will be reset to 0 upon entering a new area. A skill does not track damage taken while it is on cooldown.

Skill cooldowns: Because skills can only have one cooldown, Cast when Damage Taken does not add its 0.25s cooldown to skills that already have a cooldown that's equal or higher.

Maximum level of supported skills: Cast when Damage Taken cannot support skills with a higher level requirement than that of Cast when Damage Taken itself. This restriction only applies to skill gems; support gems are not affected.

Trigger order: If multiple triggers proc simultaneously, skills triggered follow a set order.

Targeting: Triggered spells will target the location of the entity that dealt the hit that caused the trigger. Reflected damage is considered to come from the enemy which the damage was reflected from. If triggered by self-damage, it will target a random enemy (or if there are no enemies, it will be cast at the player's location; if the triggered skill is a projectile, it will be fired in a random direction).

Gem level progression

Level				Damage Threshold	less/more Damage	Maximum Level of Supported Skill Gems	Exp.	Total Exp.
1	38	40	27	528	65% less	38	0	0
2	40	41	29	583	63% less	40	388734	388734
3	42	43	30	661	61% less	42	477437	866171
4	44	45	31	725	59% less	44	583786	1449957
5	46	47	33	812	57% less	46	710359	2160316
6	48	49	34	897	55% less	48	1355511	3515827
7	50	51	35	1003	53% less	50	1138877	4654704
8	52	53	37	1107	51% less	52	1368233	6022937
9	54	55	38	1221	49% less	54	1638338	7661275
10	56	57	39	1354	47% less	56	1956648	9617923
11	58	58	41	1485	45% less	58	3655184	13273107
12	60	60	42	1635	43% less	60	3017327	16290434
13	62	62	43	1804	41% less	62	3576232	19866666
14	64	64	44	1980	39% less	64	4231667	24098333
15	65	65	45	2184	37% less	65	2395078	26493411
16	66	66	46	2394	35% less	66	8421063	34914474
17	67	67	46	2621	33% less	67	16159983	51074457
18	68	68	47	2874	31% less	68	41170367	92244824
19	69	69	48	3142	29% less	69	86794448	179039272
20	70	70	48	3272	27% less	70	157405063	336444335
21	72	72	50	3580	25% less	72	N/A	N/A
22	74	N/A	N/A	3950	23% less	74	N/A	N/A
23	76	N/A	N/A	4350	21% less	76	N/A	N/A
24	78	N/A	N/A	4780	19% less	78	N/A	N/A
25	80	N/A	N/A	5240	17% less	80	N/A	N/A
26	82	N/A	N/A	5730	15% less	82	N/A	N/A
27	84	N/A	N/A	6250	13% less	84	N/A	N/A
28	86	N/A	N/A	6800	11% less	86	N/A	N/A
29	88	N/A	N/A	7380	9% less	88	N/A	N/A
30	90	N/A	N/A	7990	7% less	90	N/A	N/A
31	91	N/A	N/A	8310	6% less	91	N/A	N/A
32	92	N/A	N/A	8630	5% less	92	N/A	N/A
33	93	N/A	N/A	8965	4% less	93	N/A	N/A
34	94	N/A	N/A	9300	3% less	94	N/A	N/A
35	95	N/A	N/A	9650	2% less	95	N/A	N/A
36	96	N/A	N/A	10000	1% less	96	N/A	N/A
37	97	N/A	N/A	10365	N/A	97	N/A	N/A
38	98	N/A	N/A	10730	1% more	98	N/A	N/A
39	99	N/A	N/A	11110	2% more	99	N/A	N/A
40	100	N/A	N/A	11490	3% more	100	N/A	N/A

Gem quality

Type	Additional Effects per 1-20% Quality	Weight
Superior	Supported Skills require (0.5-10)% reduced amount of Damage taken to Trigger	1

Item acquisition

Cast when Damage Taken Support can drop anywhere.

Recipes

Cast when Damage Taken Support can be created from the following recipes:

Amount	Part	Description	Meta
13	The CataclysmThe Cataclysm13Level 21 Spell Gem CorruptedThe mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.	Random corrupted level 21 Spell gem	A
9	Gift of the Gemling QueenGift of the Gemling Queen9Level 20 Support GemOur Lady Dialla, as a symbol of our progress, shines greater than all the gems.	Random level 20 support gem	A
7	Dialla's SubjugationDialla's Subjugation7Support Gem Quality: +23% CorruptedA symbol of beauty and innocence The gems corrupted her mind Malachai corrupted her gems All but a glimmer of greatness lost in madness	Random corrupted support gem with 23% quality	A
6	The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb	Random level 20 gem	A
3	Gemcutter's PromiseGemcutter's Promise3Gem Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter	Random gem with 20% quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	Random gem with 1–20% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Eternal Nightmare Act 4 Petarus and Vanja	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related unique items

The following unique items are related to Cast when Damage Taken Support:

Item	Base Item		Stats
Replica Advancing FortressReplica Advancing Fortress Gut RipperClaw Physical Damage: (40-44) to (106-116.6) Critical Strike Chance: 6.30% Attacks per Second: 1.50 Weapon Range: 1.1 metresRequires Level 46, 80 Dex, 80 IntGrants 44 Life per Enemy HitSocketed Gems are Supported by Level 12 Cast when Damage Taken 15% Chance to Block Attack Damage (100-120)% increased Physical Damage +(30-50) to maximum Life 50% increased Defences from Equipped Shield Adds 45 to 75 Fire Damage if you've Blocked Recently"Additional test subjects approved. Determine exactly how many wounds need to be endured to activate Prototype #612's energies."	Gut Ripper	46	Grants 44 Life per Enemy HitSocketed Gems are Supported by Level 12 Cast when Damage Taken 15% Chance to Block Attack Damage (100-120)% increased Physical Damage +(30-50) to maximum Life 50% increased Defences from Equipped Shield Adds 45 to 75 Fire Damage if you've Blocked Recently
Replica ParadoxicaReplica Paradoxica Vaal RapierOne Handed Sword Physical Damage: 22-87 Critical Strike Chance: 6.50% Attacks per Second: 1.30 Weapon Range: 1.4 metresRequires Level 66, 212 Dex+25% to Global Critical Strike MultiplierVeiled Prefix Veiled Prefix Veiled Suffix Veiled Suffix Veiled Suffix Veiled Prefix <veiled mod pool>"This is one riddle I can't solve." - Researcher GravenTake this item to Jun Ortoi to have her Unveil it.	Vaal Rapier	66	+25% to Global Critical Strike MultiplierVeiled Prefix Veiled Prefix Veiled Suffix Veiled Suffix Veiled Suffix Veiled Prefix <veiled mod pool> Hits can't be Evaded (12-15)% increased Attack Speed while a Rare or Unique Enemy is Nearby Adds (12-14) to (18-20) Physical Damage 40% chance to cause Bleeding on Hit (18-22)% increased Cast Speed 15% chance to gain Arcane Surge when you Kill an Enemy (18-20)% chance to deal Double Damage while Focused (60-69)% increased Chaos Damage Chaos Skills have (13-15)% increased Skill Effect Duration +(24-28)% to Chaos Damage over Time Multiplier Attacks with this Weapon Penetrate (14-16)% Chaos Resistance Gain (9-10)% of Cold Damage as Extra Chaos Damage (70-79)% increased Cold Damage (21-23)% chance to Freeze +(24-28)% to Cold Damage over Time Multiplier +(36-40)% Critical Strike Multiplier while a Rare or Unique Enemy is Nearby (5-6)% increased Damage per Endurance Charge (5-6)% increased Damage per Frenzy Charge (5-6)% increased Damage per Power Charge (6-7)% chance to deal Double Damage Attacks with this Weapon Penetrate (14-16)% Elemental Resistances Gain (9-10)% of Fire Damage as Extra Chaos Damage (70-79)% increased Fire Damage (21-23)% chance to Ignite +(24-28)% to Fire Damage over Time Multiplier Gain (9-10)% of Lightning Damage as Extra Chaos Damage (70-79)% increased Lightning Damage (21-23)% chance to Shock +(311-350) to Accuracy Rating +(25-28) to Strength and Dexterity (18-22)% increased Attack Speed 15% chance to Trigger Level 1 Blood Rage when you Kill an Enemy (18-22)% increased Attack Speed +(25-28) to Dexterity and Intelligence (28-32)% increased Critical Strike Chance +(25-28) to Strength and Intelligence (120-139)% increased Physical Damage (21-25)% chance to cause Bleeding on Hit (120-139)% increased Physical Damage (21-25)% chance to Blind Enemies on hit (120-139)% increased Physical Damage (21-25)% chance to Impale Enemies on Hit with Attacks (120-139)% increased Physical Damage (21-25)% chance to Poison on Hit +2 to Level of Socketed Support Gems +(5-8)% to Quality of Socketed Support Gems Minions have (18-20)% increased Attack Speed Minions have (18-20)% increased Cast Speed Minions deal (34-38)% increased Damage Minions have (34-38)% increased maximum Life Gain (9-10)% of Physical Damage as Extra Chaos Damage +(24-28)% to Physical Damage over Time Multiplier +(9-10)% to Quality of Socketed Gems (70-79)% increased Spell Damage (18-20)% increased Mana Regeneration Rate (60-69)% increased Spell Damage Gain 5% of Non-Chaos Damage as extra Chaos Damage Trigger a Socketed Spell on Using a Skill, with a 4 second Cooldown Spells Triggered this way have 150% more Cost
Bitterbind PointBitterbind Point Titanium Spirit ShieldChance to Block: 25% Energy Shield: (187-246) Movement Speed: -3%Requires Level 68, 159 Int(30-50)% increased Spell Damage (180-220)% increased Energy Shield Spectres have (50-100)% increased maximum Life Gain Arcane Surge when you deal a Critical Strike Your Raised Spectres also gain Arcane Surge when you do (40-50)% increased Critical Strike Chance for Spells per Raised Spectre Veiled PrefixThough we live and act as individuals, in truth, we are tethered together. The barriers that divide us need not be broken for our spirits to become entangled.Take this item to Jun Ortoi to have her Unveil it.	Titanium Spirit Shield	68	(30-50)% increased Spell Damage (180-220)% increased Energy Shield Spectres have (50-100)% increased maximum Life Gain Arcane Surge when you deal a Critical Strike Your Raised Spectres also gain Arcane Surge when you do (40-50)% increased Critical Strike Chance for Spells per Raised Spectre Veiled Prefix Adds (14-16) to (20-22) Cold Damage Adds (14-16) to (20-22) Lightning Damage Adds (14-16) to (20-22) Fire Damage Adds (14-16) to (20-22) Cold Damage Adds (14-16) to (20-22) Fire Damage Adds (14-16) to (20-22) Lightning Damage (24-28)% increased Energy Shield +(19-22) to maximum Life +2 to Level of Socketed Support Gems +(5-8)% to Quality of Socketed Support Gems +(3201-4000) to Armour during Soul Gain Prevention
Cane of KulemakCane of Kulemak Serpentine StaffWarstaff Physical Damage: 56-117 Critical Strike Chance: 6.30% Attacks per Second: 1.25 Weapon Range: 1.3 metresRequires Level 68, 85 Str, 85 Int+20% Chance to Block Attack Damage while wielding a Staff(60-90)% increased Unveiled Modifier magnitudes Veiled Prefix Veiled Suffix <Veiled Prefix or Veiled Suffix> <veiled mod pool>Stolen power is still power.Take this item to Jun Ortoi to have her Unveil it.	Serpentine Staff	68	+20% Chance to Block Attack Damage while wielding a Staff(60-90)% increased Unveiled Modifier magnitudes Veiled Prefix Veiled Suffix <Veiled Prefix or Veiled Suffix> <veiled mod pool> (27-30)% increased Attack Speed while a Rare or Unique Enemy is Nearby (26-31)% increased Cast Speed 15% chance to gain Arcane Surge when you Kill an Enemy (36-40)% chance to deal Double Damage while Focused (90-99)% increased Chaos Damage Chaos Skills have (26-30)% increased Skill Effect Duration +(44-48)% to Chaos Damage over Time Multiplier Attacks with this Weapon Penetrate (14-16)% Chaos Resistance (100-109)% increased Cold Damage (35-40)% chance to Freeze +(44-48)% to Cold Damage over Time Multiplier +(54-60)% Critical Strike Multiplier while a Rare or Unique Enemy is Nearby (7-8)% increased Damage per Endurance Charge (7-8)% increased Damage per Frenzy Charge (7-8)% increased Damage per Power Charge (12-14)% chance to deal Double Damage Attacks with this Weapon Penetrate (14-16)% Elemental Resistances (100-109)% increased Fire Damage (35-40)% chance to Ignite +(44-48)% to Fire Damage over Time Multiplier (100-109)% increased Lightning Damage (35-40)% chance to Shock +(311-350) to Accuracy Rating +(25-28) to Strength and Dexterity (18-22)% increased Attack Speed 15% chance to Trigger Level 1 Blood Rage when you Kill an Enemy (18-22)% increased Attack Speed +(25-28) to Dexterity and Intelligence (28-32)% increased Critical Strike Chance +(25-28) to Strength and Intelligence (120-139)% increased Physical Damage (21-25)% chance to cause Bleeding on Hit (120-139)% increased Physical Damage (21-25)% chance to Blind Enemies on hit (120-139)% increased Physical Damage (21-25)% chance to Impale Enemies on Hit with Attacks (120-139)% increased Physical Damage (21-25)% chance to Poison on Hit +2 to Level of Socketed Support Gems +(5-8)% to Quality of Socketed Support Gems Minions have (34-38)% increased Attack Speed Minions have (34-38)% increased Cast Speed Minions deal (50-59)% increased Damage Minions have (50-59)% increased maximum Life +(44-48)% to Physical Damage over Time Multiplier (100-109)% increased Spell Damage (36-40)% increased Mana Regeneration Rate (90-99)% increased Spell Damage Gain (9-10)% of Non-Chaos Damage as extra Chaos Damage Trigger a Socketed Spell on Using a Skill, with a 4 second Cooldown Spells Triggered this way have 150% more Cost
Forbidden ShakoForbidden Shako Great CrownArmour: (143-161) Energy Shield: (29-33)Requires Level 68, 59 Str, 59 IntSocketed Gems are Supported by Level (1-10) <random Support Gem> Socketed Gems are Supported by Level (25-35) <random Support Gem> +(25-30) to all AttributesThe Azmeri must never touch the Tears of Maji, lest Viridi weep.	Great Crown	68	Socketed Gems are Supported by Level (1-10) <random Support Gem> Socketed Gems are Supported by Level (25-35) <random Support Gem> +(25-30) to all Attributes
The Hungry LoopThe Hungry Loop Unset RingRequires Level 70Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems <Consumed support gem modifier>Be careful where you put your finger.	Unset Ring	70	Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems <Consumed support gem modifier> Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Added Chaos Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Added Cold Damage Socketed Gems are Supported by Level 20 Added Fire Damage Has Consumed 1 Gem Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Added Lightning Damage Has Consumed 1 Gem Socketed Gems are supported by Level 20 Additional Accuracy Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Arcane Surge Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Archmage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Arrow Nova Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Added Chaos Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Added Cold Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Added Fire Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Added Lightning Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Ancestral Call Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Arrow Nova Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Blasphemy Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Brutality Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Burning Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Cast On Critical Strike Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Cast While Channelling Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Chain Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Cold Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Controlled Destruction Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Hextouch Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Deadly Ailments Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Elemental Focus Has Consumed 1 Gem Socketed Gems are Supported by Level 4 Awakened Empower Has Consumed 1 Gem Socketed Gems are Supported by Level 4 Awakened Enhance Has Consumed 1 Gem Socketed Gems are Supported by Level 4 Awakened Enlighten Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Fire Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Fork Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Generosity Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Greater Multiple Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Increased Area Of Effect Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Lightning Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Melee Physical Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Melee Splash Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Minion Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Multistrike Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Spell Cascade Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Spell Echo Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Swift Affliction Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Unbound Ailments Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Unleash Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Vicious Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Void Manipulation Has Consumed 1 Gem Socketed Gems are Supported by Level 5 Awakened Elemental Damage With Attacks Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Barrage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Behead Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Blasphemy Has Consumed 1 Gem Socketed Gems are supported by Level 20 Blind Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Bloodlust Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Arrogance Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Bloodthirst Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Bonechill Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Brutality Has Consumed 1 Gem Socketed Gems are supported by Level 20 Cast On Critical Strike Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cast when Damage Taken Has Consumed 1 Gem Socketed Gems are supported by Level 20 Cast on Death Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cast On Melee Kill Has Consumed 1 Gem Socketed Gems are supported by Level 20 Cast when Stunned Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cast While Channelling Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Chain Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Chance To Bleed Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Combustion Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Withering Touch Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Charged Mines Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Close Combat Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cluster Trap Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cold Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cold to Fire Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Concentrated Effect Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Controlled Blaze Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Controlled Destruction Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Corrupting Cry Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Culling Strike Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cursed Ground Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Hextouch Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Deadly Ailments Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Predator Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Decay Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Devour Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Divine Blessing Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Earthbreaker Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Efficacy Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Elemental Focus Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Elemental Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Elemental Proliferation Has Consumed 1 Gem Socketed Gems are Supported by Level 3 Empower Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Endurance Charge on Melee Stun Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Energy Leech Has Consumed 1 Gem Socketed Gems are Supported by Level 3 Enhance Has Consumed 1 Gem Socketed Gems are Supported by Level 3 Enlighten Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Eternal Blessing Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Faster Attacks Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Faster Casting Has Consumed 1 Gem Socketed Gems are supported by Level 20 Faster Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Feeding Frenzy Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Fire Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Fist of War Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Flamewood Has Consumed 1 Gem Socketed Gems are supported by Level 20 Chance to Flee Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Focused Ballista Has Consumed 1 Gem Socketed Gems are supported by Level 20 Fork Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Fortify Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Cruelty Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Charged Traps Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Fresh Meat Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Frigid Bond Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Generosity Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Greater Multiple Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Greater Volley Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Guardian's Blessing Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Hex Bloom Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Hypothermia Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Ice Bite Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Ignite Proliferation Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Immolate Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Impale Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Impending Doom Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Increased Area of Effect Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Burning Damage Has Consumed 1 Gem Socketed Gems are supported by Level 20 Increased Critical Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Increased Critical Strikes Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Increased Duration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Minion Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Minion Life Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Minion Speed Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Infernal Legion Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Innervate Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Iron Grip Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Iron Will Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Item Quantity Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Item Rarity Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Knockback Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Lesser Multiple Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Chance to Poison Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Life Gain On Hit Has Consumed 1 Gem Socketed Gems are supported by Level 20 Life Leech Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Lifetap Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Lightning Penetration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Locus Mine Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Maim Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Manaforged Arrows Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Mana Leech Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Mark On Hit Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Meat Shield Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Damage On Full Life Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Melee Physical Damage Has Consumed 1 Gem Socketed Gems are supported by Level 20 Melee Splash Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Minefield Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Mirage Archer Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Spell Echo Has Consumed 1 Gem Socketed Gems are supported by Level 20 Multistrike Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Multiple Totems Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Multiple Traps Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Nightblade Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Momentum Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Overcharge Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Volley Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Vicious Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Physical To Lightning Has Consumed 1 Gem Socketed Gems are supported by Level 20 Pierce Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Pinpoint Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Point Blank Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Critical Strike Affliction Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Power Charge On Critical Strike Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Prismatic Burst Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Pulverise Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Rage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Ballista Totem Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Swift Affliction Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Block Chance Reduction Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Less Duration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Inspiration Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Blastchain Mine Has Consumed 1 Gem Socketed Gems are Supported by Level 20 High-Impact Mine Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Returning Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Ruthless Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Sacrifice Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Sadism Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Second Wind Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Shockwave Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Slower Projectiles Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Spellblade Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Spell Cascade Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Intensify Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Spell Totem Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Ancestral Call Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Infused Channelling Has Consumed 1 Gem Socketed Gems are supported by Level 20 Stun Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Elemental Army Support Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Summon Phantasm Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Swift Assembly Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Swiftbrand Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Trap Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Trap And Mine Damage Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Advanced Traps Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Trauma Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Trinity Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Unbound Ailments Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Unleash Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Urgent Orders Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Vile Toxins Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Void Manipulation Has Consumed 1 Gem Socketed Gems are Supported by Level 20 Volatility Has Consumed 1 Gem Socketed Gems are supported by Level 20 Elemental Damage with Attacks

Alternate skill effects

Cast when Damage Taken Support has the following alternate skill effects:

Item	Effect(s)
Madcap Cast when Damage Taken EffectMadcap Cast when Damage Taken EffectSkill Gem EffectYour Cast when Damage Taken becomes a Madcap Effect.	Your Cast when Damage Taken becomes a Madcap Effect.

Cats when Damage Taken

Cats spawned by Cats when Damage Taken

Cats when Damage Taken was a trigger gem available only on April 1, 2015 as an April Fool's joke. Like Cast when Damage Taken, it caused a linked spell to activate when the player accumulated damage taken, but besides casting the spell, it also summoned black cats. Other properties were identical to the Cast when Damage Taken skill.

Version history

Version	Changes
3.23.0	Quality now causes Supported Skills to require 0-10% reduced amount of Damage taken to Trigger, instead of causing them to deal 0-10% increased Damage.
3.19.0	Cast when Damage Taken Support now causes Supported Skills to deal 65% less Damage at gem level 1 (previously 70%), up to 27% less Damage at gem level 20 (previously 6% more Damage).
3.15.0	Trigger skill gems now cost mana. Now has a 250% Cost and Reservation Multiplier.
Unknown	The Divergent alternate gem quality has changed to Supported Skills require 1% reduced amount of Damage taken to Trigger [Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.]
3.12.0	Now has alternative gem quality: Anomalous: Supported Skills have 1% increased Skill Effect Duration (per 1% quality) Divergent: 1% more Damage required to Trigger (per 1% quality)
2.0.0	Enduring Cry is now a Warcry instead of a spell, therefore it can't be cast anymore.
1.3.1g	Fixed a bug with the trigger gems that cause spells to automatically cats on various conditions.
1.3.1	Spells triggered by Cast on Damage Taken have had their damage reduced by 25%.
1.3.0	Trigger gems are now classified as Trigger.
1.2.2	Gems may now only be supported by a single trigger gem, gems supported by multiple trigger gems will be disabled.
1.0.1	The level requirement of gems augmented by Cast on Damage Taken may not exceed the level requirement of the Cast on Damage Taken gem.
1.0.0f	Cooldown of 250ms added.
1.0.0	Cast when Damage Taken has been added to the game.

See also

• Guide:Cast when Damage Taken
• Cast on Death SupportCast on Death SupportSupport, Spell, Trigger
  Icon: !
  Level: (1-20)
  Cost & Reservation Multiplier: 0%Requires Level 38Each supported spell skill will be triggered when you die. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.(0-152)% more Damage while Dead
  100% chance to Trigger Supported Non-Minion Spells on Death
  Supported Skills Cost nothing
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (3-60)% increased Area of Effect while DeadThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Cast On Critical Strike SupportCast On Critical Strike SupportCritical, Support, Spell, Trigger
  Icon: &
  Level: (1-20)
  Cost & Reservation Multiplier: 120%
  Cooldown Time: 0.15 sec
  Can Store 1 Use(s)Requires Level 38Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.Supported Attacks will Trigger a Supported Spell when you Crit an Enemy
  Supported Skills deal (19-10)% less Spell Damage
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (1-20)% increased Attack Critical Strike Chance
  Supported Skills have (1-20)% increased Spell Critical Strike ChanceThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Cast on Melee Kill SupportCast on Melee Kill SupportSupport, Melee, Attack, Spell, Trigger
  Icon: &
  Level: (1-20)
  Cost & Reservation Multiplier: 120%
  Cooldown Time: 0.15 sec
  Can Store 1 Use(s)Requires Level 38Must support both a melee attack skill and a spell skill to work. The attack skill will trigger a spell when it kills an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.Supported Melee Attacks will Trigger a Supported Spell on Kill
  Supported Spells have (20-39)% more Spell Damage
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Attack Damage
  Supported Skills deal (0.5-10)% increased Spell DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.