Cast when Damage Taken Support
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Cast when Damage Taken is a support gem. It causes a linked spell to trigger when the player takes a certain amount of damage.
Skill functions and interactions
Trigger gem: Like all trigger gems, Cast when Damage Taken only "casts" spells. Attack gems such as Double Strike are not considered spells. Multiple spells can be linked to a single trigger gem, and will all be triggered if so. Multiple copies of Cast when Damage Taken will also function independently.
Damage counter and cooldown: Each linked spell gains an internal damage counter that tracks the total accumulated damage taken from hits, though not from damage over time or the Blood Magic passive[1] (e.g. you cannot use Module Error: Too many skills found with q_where = skill.active_skill_name="Righteous Fire". Please choose only one of the following ids:
MonsterRighteousFireDemonBoss - Deals (1.9-647.8) Base Fire Damage per second, Base radius is 1.8 metres (page)
WickerManRighteousFireBlight - Deals 1.3 Base Fire Damage per second, Base radius is 1.8 metres (page) to trigger Cast when Damage Taken). All damage counters will be reset to 0 upon entering a new area. When a linked spell is cast, it is put on cooldown for 250 ms and will not track damage during that time.
Multiple copies of the same gem share cooldowns, meaning that if two copies of the same spell are triggered within 250 ms of each other, the first will trigger and the second will fail to do so as it is on cooldown. This mostly prevents using multiple copies of the same spell with Cast when Damage Taken, though the use of Cast when Damage Taken gems of different levels can avoid cooldown overlap in some circumstances due to the differing amounts of damage required to trigger the spells.
The Cast when Damage Taken gem itself does not have its own counter or cooldown[2].
Maximum level of supported skills: Cast when Damage Taken cannot support skills with a higher player level requirement than that of Cast when Damage Taken itself. Note that this restriction only applies to active skills; any level of other support gems may be used.
Trigger order: Trigger gems and their linked skills are cast in a certain order that depends both on which item it is equipped on and which socket the skills are in. If there are trigger gems in each equipped item, the order of operation will be:
- Main hand ⇒ Amulet ⇒ Helm ⇒ Off hand ⇒ Body armour ⇒ Gloves ⇒ Boots
The linked sockets also follow a specific order, as follows:
1 | ⇒ | 2 |
⇓ | ||
4 | ⇐ | 3 |
⇓ | ||
5 | ⇒ | 6 |
Damage effectiveness: The damage effectiveness increases with level, but so does the damage taken per cast; overall, the amount of damage that needs to be taken per damage effectiveness goes up at higher gem levels. The optimum is a level 2 gem, which requires 1442 damage taken per 100% damage effectiveness. In comparison, a level 20 gem requires 3057 damage taken per 100% damage effectiveness.
Targeting: Targeted spells will cast towards the enemy that caused the last damage. Reflected damage is considered to come from the enemy originally damaged. If the damage was self-caused, it will target a random enemy (if there are no enemies, it will be cast at the player, if it is a projectile, it will be fired in a random direction) [3].
Totems: Cast when Damage Taken can't be used with totems.
Gem level progression
Level | ![]() | ![]() | ![]() | Damage Threshold | less/more Damage | maximum Item Level | Exp. | Total Exp. |
---|---|---|---|---|---|---|---|---|
1 | 38 | 40 | 27 | N/A | 65% less | 38 | 0 | 0 |
2 | 40 | 41 | 29 | N/A | 63% less | 40 | 388734 | 388734 |
3 | 42 | 43 | 30 | N/A | 61% less | 42 | 477437 | 866171 |
4 | 44 | 45 | 31 | N/A | 59% less | 44 | 583786 | 1449957 |
5 | 46 | 47 | 33 | N/A | 57% less | 46 | 710359 | 2160316 |
6 | 48 | 49 | 34 | N/A | 55% less | 48 | 1355511 | 3515827 |
7 | 50 | 51 | 35 | N/A | 53% less | 50 | 1138877 | 4654704 |
8 | 52 | 53 | 37 | N/A | 51% less | 52 | 1368233 | 6022937 |
9 | 54 | 55 | 38 | N/A | 49% less | 54 | 1638338 | 7661275 |
10 | 56 | 57 | 39 | N/A | 47% less | 56 | 1956648 | 9617923 |
11 | 58 | 58 | 41 | N/A | 45% less | 58 | 3655184 | 13273107 |
12 | 60 | 60 | 42 | N/A | 43% less | 60 | 3017327 | 16290434 |
13 | 62 | 62 | 43 | N/A | 41% less | 62 | 3576232 | 19866666 |
14 | 64 | 64 | 44 | N/A | 39% less | 64 | 4231667 | 24098333 |
15 | 65 | 65 | 45 | N/A | 37% less | 65 | 2395078 | 26493411 |
16 | 66 | 66 | 46 | N/A | 35% less | 66 | 8421063 | 34914474 |
17 | 67 | 67 | 46 | N/A | 33% less | 67 | 16159983 | 51074457 |
18 | 68 | 68 | 47 | N/A | 31% less | 68 | 41170367 | 92244824 |
19 | 69 | 69 | 48 | N/A | 29% less | 69 | 86794448 | 179039272 |
20 | 70 | 70 | 48 | N/A | 27% less | 70 | 157405063 | 336444335 |
21 | 72 | 72 | 50 | N/A | 25% less | 72 | N/A | N/A |
22 | 74 | N/A | N/A | N/A | 23% less | 74 | N/A | N/A |
23 | 76 | N/A | N/A | N/A | 21% less | 76 | N/A | N/A |
24 | 78 | N/A | N/A | N/A | 19% less | 78 | N/A | N/A |
25 | 80 | N/A | N/A | N/A | 17% less | 80 | N/A | N/A |
26 | 82 | N/A | N/A | N/A | 15% less | 82 | N/A | N/A |
27 | 84 | N/A | N/A | N/A | 13% less | 84 | N/A | N/A |
28 | 86 | N/A | N/A | N/A | 11% less | 86 | N/A | N/A |
29 | 88 | N/A | N/A | N/A | 9% less | 88 | N/A | N/A |
30 | 90 | N/A | N/A | N/A | 7% less | 90 | N/A | N/A |
31 | 91 | N/A | N/A | N/A | 6% less | 91 | N/A | N/A |
32 | 92 | N/A | N/A | N/A | 5% less | 92 | N/A | N/A |
33 | 93 | N/A | N/A | N/A | 4% less | 93 | N/A | N/A |
34 | 94 | N/A | N/A | N/A | 3% less | 94 | N/A | N/A |
35 | 95 | N/A | N/A | N/A | 2% less | 95 | N/A | N/A |
36 | 96 | N/A | N/A | N/A | 1% less | 96 | N/A | N/A |
37 | 97 | N/A | N/A | N/A | N/A | 97 | N/A | N/A |
38 | 98 | N/A | N/A | N/A | 1% more | 98 | N/A | N/A |
39 | 99 | N/A | N/A | N/A | 2% more | 99 | N/A | N/A |
40 | 100 | N/A | N/A | N/A | 3% more | 100 | N/A | N/A |
Quest reward
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Vendor reward
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Strategy
Due to the large amount of damage taken needed per damage effectiveness and the rapid scaling of damage taken required per level, it is advisable to use spells for purposes other than damage that do not depend heavily on the active skill level. Possible choices include:
- Module Error: Too many skills found with q_where = skill.active_skill_name="Frost Wall". Please choose only one of the following ids:
WbFrostWall - Deals (2-35) to (2-52) Cold Damage, Base duration is (1.60-3.45) seconds, 0.15 seconds between appearance of Wall sections, +(1-2.7) metres to Wall length (page)
ProphecyFrostWall - Deals (2-35) to (2-52) Cold Damage, Base duration is (1.60-3.45) seconds, 0.15 seconds between appearance of Wall sections, +(2-5.4) metres to Wall length (page) to block enemies. - Module Error: No skills found with q_where = skill.active_skill_name="Arctic Breath" to create ground ice.
- Passive corpse disposal/minion buffing via Module Error: Too many skills found with q_where = skill.active_skill_name="Detonate Dead". Please choose only one of the following ids:
DetonateDeadRoyale - Deals (10-105) to (15-158) Fire Damage, Explosion deals base Fire Damage equal to 6% of the corpse's Maximum Life, +(0-0.2) metres to radius, Base radius is 2.2 metres (page)
DetonateDead - Deals (15-798) to (22-1197) Fire Damage, Explosion deals base Fire Damage equal to (6-7.9)% of the corpse's Maximum Life, Base radius is (2.2-2.6) metres (page), Module Error: Too many skills found with q_where = skill.active_skill_name="Flesh Offering". Please choose only one of the following ids:
FleshOfferingFairgravesMapBoss - Base duration is 20.00 seconds, Additional 4.00 seconds Base Duration per extra corpse Consumed, Grants Minions 100% increased Attack Speed, Grants Minions 100% increased Cast Speed, Grants Minions 100% increased Movement Speed (page)
BlightNecromancerChampionFleshOffering - Base duration is 3.00 seconds, Additional 1.00 seconds Base Duration per extra corpse Consumed, Grants Minions 25% increased Attack Speed, Grants Minions 25% increased Cast Speed, Grants Minions 25% increased Movement Speed (page), orBone Offering.
- Module Error: Too many skills found with q_where = skill.active_skill_name="Lightning Warp". Please choose only one of the following ids:
LightningWarpHardMode - Deals (1-51) to (19-965) Lightning Damage, +(0-0.4) metres to radius, (0-19)% reduced Duration, Can queue up to 50 uses (page)
LightningWarp - Deals (1-51) to (19-965) Lightning Damage, +(0-0.4) metres to radius, (30-49)% reduced Duration, Can queue up to 50 uses (page) to escape melee range. (Could backfire.) - Curses. This can be a reliable way of automatically casting curses, at the cost of lower curse level.
Some supports also potentially combine well, especially with a persistent rapid-firing skill such as Module Error: Too many skills found with q_where = skill.active_skill_name="Ball Lightning". Please choose only one of the following ids:
ExileBallLightningTrap - Deals (1-110) to (2-204) Lightning Damage, When your Traps Trigger, your nearby Traps also Trigger, Trap lasts +6 seconds, Traps are thrown randomly around targeted location, 200% reduced Projectile Speed, Throw up to (6-10) additional Traps, Base radius is 1.8 metres (page)
StrMissionBallLightning - Deals (1-166) to (2-309) Lightning Damage, Totem lasts 8 seconds, Summons a Totem which uses this Skill, 50% increased Cast Speed, Base radius is 1.8 metres (page):
- Module Error: No skills found with q_where = skill.active_skill_name="Blind"
- Module Error: No skills found with q_where = skill.active_skill_name="Chance to Flee"
- Passive IIR culling via Module Error: No skills found with q_where = skill.active_skill_name="Culling Strike", Module Error: No skills found with q_where = skill.active_skill_name="Item Rarity", and a skill that causes many hits.
- Module Error: No skills found with q_where = skill.active_skill_name="Curse On Hit" (As of Version 1.2.2 CWDT will only trigger Ball Lightning in this example, but Ball Lightning will then not trigger Curse On Hit.)
- Module Error: No skills found with q_where = skill.active_skill_name="Knockback"
- Module Error: No skills found with q_where = skill.active_skill_name="Power Charge On Critical"
Quick reference chart of commonly used spell gems:
Level | Damage Threshold | Damage Modifier | Max level of spell gems | Module Error: Too many skills found with q_where = skill.active_skill_name="Immortal Call". Please choose only one of the following ids: ExileImmortalCall - Base duration is (2.80-5.00) seconds (page) WbImmortalCall - Base duration is (2.80-5.00) seconds (page) (Endurance charge bonus) |
Module Error: Too many skills found with q_where = skill.active_skill_name="Molten Shell". Please choose only one of the following ids: GravicusMoltenShell - Base duration is 10.00 seconds, Deals (143-2698) to (214-4048) Fire Damage, Shields break after (752-4460) total Damage is prevented, (4352-19367) additional Armour (page) GoatmanMoltenShellInvasion - Base duration is 10.00 seconds, Deals (15-5246) to (23-7869) Fire Damage, Shields break after (4-2648) total Damage is prevented, (162-4334) additional Armour (page) (additional armour) |
Module Error: No skills found with q_where = skill.active_skill_name="Arctic Breath" | ![]() |
Module Error: Too many skills found with q_where = skill.active_skill_name="Frost Wall". Please choose only one of the following ids: WbFrostWall - Deals (2-35) to (2-52) Cold Damage, Base duration is (1.60-3.45) seconds, 0.15 seconds between appearance of Wall sections, +(1-2.7) metres to Wall length (page) ProphecyFrostWall - Deals (2-35) to (2-52) Cold Damage, Base duration is (1.60-3.45) seconds, 0.15 seconds between appearance of Wall sections, +(2-5.4) metres to Wall length (page) |
![]() |
Module Error: Too many skills found with q_where = skill.active_skill_name="Vortex". Please choose only one of the following ids: WaterElementalVortexOnDeath - Deals (14-833) to (21-1250) Cold Damage, Base duration is 7.00 seconds, Deals (6.1-1447) Base Cold Damage per second, Modifiers to Spell Damage apply to this Skill's Damage Over Time effect, 100% chance to Trigger this Spell on Death, Base radius is 2 metres, Base secondary radius is 2 metres (page) FrostBoltNovaRoyale - Deals (3-51) to (5-76) Cold Damage, Base duration is 2.00 seconds, Deals (14.8-228.6) Base Cold Damage per second, Modifiers to Spell Damage apply to this Skill's Damage Over Time effect, 20% less Area of Effect when Cast on Frostbolt, Base radius is 2 metres, Base secondary radius is 2 metres, (0-36)% increased Cooldown Recovery Rate, Can explode from up to 5 Frostbolt Projectiles (page) |
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Module Error: Too many skills found with q_where = skill.active_skill_name="Temporal Chains". Please choose only one of the following ids: IzaroTemporalChains - Base duration is (5.00-6.45) seconds, 40% reduced Effect of Curse against Players, Cursed Normal and Magic Enemies have (15-25)% less Action Speed, Other effects on Cursed enemies expire 25% slower, Cursed Rare and Unique Enemies have 7% less Action Speed (page) TemporalChains - Base duration is (5.00-8.80) seconds, +(0-1) metre to radius, 50% less Effect of Curse against Players, Cursed Normal and Magic Enemies have (15-29)% less Action Speed, Other effects on Cursed enemies expire 25% slower, Cursed Rare and Unique Enemies have (9-18)% less Action Speed (page) |
Golem (any) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 528 | -70% | 38 | 3 (106%) | 10 (156) | 4 | 5 | 10 | 7 | 4 | 7 | 3 | 5 | 3 |
2 | 583 | -66% | 40 | 4 (109%) | 11 (196) | 5 | 6 | 11 | 8 | 5 | 8 | 4 | 6 | 4 |
3 | 661 | -62% | 42 | 5 (112%) | 11 (196) | 6 | 7 | 11 | 8 | 6 | 8 | 5 | 7 | 5 |
4 | 725 | -58% | 44 | 6 (115%) | 12 (245) | 7 | 7 | 12 | 9 | 7 | 9 | 6 | 7 | 6 |
5 | 812 | -54% | 46 | 7 (118%) | 12 (245) | 8 | 8 | 12 | 10 | 8 | 10 | 7 | 8 | 7 |
6 | 897 | -50% | 48 | 8 (121%) | 13 (304) | 9 | 9 | 13 | 10 | 9 | 10 | 8 | 9 | 8 |
7 | 1003 | -46% | 50 | 9 (124%) | 13 (304) | 10 | 10 | 13 | 11 | 10 | 11 | 9 | 10 | 9 |
8 | 1107 | -42% | 52 | 10 (127%) | 14 (376) | 11 | 11 | 14 | 12 | 11 | 12 | 10 | 11 | 10 |
9 | 1221 | -38% | 54 | 11 (130%) | 14 (376) | 12 | 12 | 14 | 12 | 12 | 12 | 11 | 12 | 11 |
10 | 1354 | -34% | 56 | 12 (133%) | 15 (440) | 13 | 13 | 15 | 13 | 13 | 13 | 12 | 13 | 12 |
11 | 1485 | -30% | 58 | 13 (136%) | 16 (515) | 14 | 14 | 16 | 14 | 14 | 14 | 13 | 14 | 13 |
12 | 1635 | -26% | 60 | 14 (139%) | 16 (515) | 15 | 15 | 16 | 15 | 15 | 15 | 14 | 15 | 14 |
13 | 1804 | -22% | 62 | 15 (142%) | 17 (600) | 16 | 16 | 17 | 16 | 16 | 16 | 15 | 16 | 15 |
14 | 1980 | -18% | 64 | 16 (145%) | 18 (698) | 17 | 17 | 18 | 17 | 17 | 17 | 16 | 17 | 16 |
15 | 2184 | -14% | 65 | 16 (145%) | 18 (698) | 17 | 17 | 18 | 17 | 17 | 17 | 16 | 17 | 16 |
16 | 2394 | -10% | 66 | 17 (148%) | 18 (698) | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 17 |
17 | 2621 | -6% | 67 | 17 (148%) | 19 (812) | 18 | 18 | 19 | 18 | 18 | 18 | 17 | 18 | 17 |
18 | 2874 | -2% | 68 | 18 (151%) | 19 (812) | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 18 |
19 | 3142 | +2% | 69 | 19 (154%) | 19 (812) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
20 | 3272 | +6% | 70 | 20 (157%) | 20 (943) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
21 | 3580 | +10% | 72 | 21 (160%) | 21 (1040) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
22 | 3950 | +14% | 74 | 22 (163%) | 22 (1148) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
23 | 4350 | +18% | 76 | 23 (166%) | 23 (1265) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
Cats when Damage Taken
![](/images/thumb/b/bd/Cats_when_Damage_Taken.jpg/250px-Cats_when_Damage_Taken.jpg)
Cats when Damage Taken was a trigger gem available only on April 1st 2015. It was a bug caused by a typo in source code.[4] 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 |
---|---|
2.0.0 |
|
1.3.1g |
|
1.3.1 |
|
1.3.0 |
|
1.2.2 |
|
1.0.1 |
|
1.0.0f |
|
1.0.0 |
|
See also
- Module Error: No skills found with q_where = skill.active_skill_name="Cast on Death"
- Module Error: No skills found with q_where = skill.active_skill_name="Cast On Critical Strike"
- Module Error: No skills found with q_where = skill.active_skill_name="Cast on Melee Kill"
References
- ↑ Mark_GGG (9 October 2013). "Path of Exile Forum". Retrieved 2 July 2015.
- ↑ Mark_GGG (May 20, 2014). "Path of Exile Forum".
- ↑ Some experimentation with Heartbound Loop
- ↑ Chris (April 1, 2015). "Incident Report for April 1 Catastrophe". Retrieved April 1, 2015.