Bonechill Support

Bonechill SupportCold, Support
Icon: B
Level: (1-20)Requires Level 38Supports any skill that can chill enemies or create chilling areas.Supported Skills have (25-44)% increased Effect of Chill on Enemies
Supported Skills deal (5-14)% more Cold Damage
Enemies Chilled by Supported Skills increase Cold Damage taken by Chill Effect
Enemies in Chilling Areas from Supported Skills increase Cold Damage taken by Chill Effect

Additional Effects From 1-20% Quality:
Supported Skills have 1% increased Chill Duration on EnemiesSupported Skills deal 0.5% increased Cold DamageSupported Skills have 0.5% increased Effect of Chill on EnemiesThis 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 Active 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/SupportGemBonechill

Bonechill Support is a support gem that grants the supported skill more cold damage and increased chill effect. Enemies take also increased cold damage from all sources based on the magnitude of the chill effect applied by the skill.

Skill functions and interactions

The damage taken bonus from this gem is unofficially known as Bonechill. Chill, and therefore the effect of Bonechill, is capped at baseline 30%. A chill that reduces Action Speed by 14% will cause the enemy to take 14% increased Cold Damage. Freeze is considered a separate ailment, and it will not impart any additional damage bonus.

For Bonechill to affect an enemy, the chill must be caused by damage from the linked skill, or from chilling areas created by the skill. However, if the enemy is affected by multiple sources of chill (as long as one of those sources is linked to Bonechill), the strongest chill magnitude will be used for the Bonechill effect magnitude, even if it itself does not inflict Bonechill. The gem's advanced description specifies (Chilled Ground, Creeping Frost, Frost Shield, and Vortices are Chilling Areas). Notably, sources of chill such as Aquamarine FlaskAquamarine FlaskLasts 8.00 Seconds
Consumes 20 of 50 Charges on use
60% reduced Effect of Freeze on youRequires Level 27Creates Chilled Ground on UseRight click to drink. Can only hold charges while in belt. Refills as you kill monsters. will not provide a damage bonus, since its chilled ground is not from a skill.

Enemies that are Unaffected by Chill will also be unaffected by Bonechill.

Note that similarly to Combustion SupportCombustion SupportFire, Support
Icon: i
Level: (1-20)
Cost & Reservation Multiplier: 130%Requires Level 8Supports any skill that hits enemies.Supported Skills deal (10-19)% more Fire Damage
Supported Skills have 25% chance to Ignite
Enemies Ignited by Supported Skills have -10% to Fire Resistance

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Fire 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. and Maim SupportMaim SupportAttack, Physical, Support
Icon: m
Level: (1-20)
Cost & Reservation Multiplier: 130%Requires Level 8Supports attack skills, or other skills that can maim enemies.Supported Skills deal (10-19)% more Physical Damage
Supported Attacks have 30% chance to Maim on Hit
Enemies Maimed by Supported Skills take 10% increased Physical Damage

Additional Effects From 1-20% Quality:
Supported Skills have (1-20)% increased Effect of MaimThis 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., Bonechill does not need to be linked to the player's main skill to apply its "increased damage taken" effects. This means that Bonechill can be applied by a secondary utility skill that activates on Cast when Damage Taken SupportCast 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
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. or other automatons (such as VortexVortexSpell, AoE, Cold, Duration, Nova
Level: (1-20)
Cost: (13-25) Mana
Cast Time: 0.75 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 270%
AoE Radius: 2Requires Level 28An icy blast explodes around the caster, dealing cold damage to enemies, and leaving behind a whirling vortex which deals cold damage over time and chills enemies caught in it.Deals (49-779) to (73-1169) Cold Damage
Base duration is 3.00 seconds
Deals (116-2316.1) Base Cold Damage per second
Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
Base radius is 2 metres
Base secondary radius is 2 metres

Additional Effects From 1-20% Quality:
+(0.01-0.2) metres to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. or Cold SnapCold SnapSpell, AoE, Cold, Duration
Level: (1-20)
Cost: (11-28) Mana
Cooldown Time: 3.00 sec
Can Store 1 Use(s)
Cast Time: 0.85 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 320%
AoE Radius: 16Requires Level 16Creates a sudden burst of cold in a targeted area, damaging enemies. Also creates an expanding area which is filled with chilled ground, and deals cold damage over time to enemies. Enemies that die while in the area have a chance to grant Frenzy Charges. The cooldown can be bypassed by expending a Frenzy Charge.Deals (34-1440) to (51-2160) Cold Damage
Base duration is 5.00 seconds
Deals (28.7-1895.4) Base Cold Damage per second
Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
Burst Base radius is 1.5 metres
Chilled Ground Base initial radius is 1.5 metres
Chilled Ground Base final radius is 3 metres
25% chance to gain a Frenzy Charge when an Enemy Dies while in this Skill's Area

Additional Effects From 1-20% Quality:
(1-20)% more Effect of ChillPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.), while the player's main skill uses a more powerful gem such as Elemental Focus SupportElemental Focus SupportSupport
Icon: F
Level: (1-20)
Cost & Reservation Multiplier: 130%Requires Level 18Supports any skill that hits or burns enemies, or inflicts elemental ailments.Supported Skills deal (20-34)% more Elemental Damage
Supported Skills cannot inflict Elemental Ailments

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Elemental 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..

Summon SkitterbotsSummon SkitterbotsTrap, Mine, Spell, Minion, Cold, Lightning, AoE, Aura
Level: (1-20)
Reservation: 35% Mana
Cooldown Time: 1.00 sec
Can Store 1 Use(s)
Cast Time: InstantRequires Level 16Summon a Chilling Skitterbot and a Shocking Skitterbot, which will trigger your traps and detonate your mines. Mines detonated by Skitterbots will re-arm and can then be detonated again. The Skitterbots grant you more trap and mine damage, and cannot be targeted or damaged.(0-76)% increased Minion Movement Speed
Minions have (0-19)% increased Chill Effect
Minions have (0-19)% increased Shock Effect
Maximum 1 Summoned Skitterbot of each type
Chilling Skitterbot's Aura Chills Enemies near it
Shocking Skitterbot's Aura Shocks Enemies near it
Skitterbots grant 10% more Trap and Mine Damage

Additional Effects From 1-20% Quality:
(2-40)% increased Minion Movement SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. can be linked to Bonechill and Unbound Ailments SupportUnbound Ailments SupportSupport
Icon: U
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires Level 8Supports any skill that hits enemies or inflicts ailments(35-54)% increased Duration of Ailments inflicted with Supported Skills
Supported Skills have (35-54)% increased Effect of non-Damaging Ailments on Enemies
Supported Skills deal (10-19)% more Damage with Ailments

Additional Effects From 1-20% Quality:
(0.5-10)% increased Duration of Ailments inflicted with Supported SkillsThis 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. for automated Bonechill, at the cost of additional reservation.

Gem level progression

Level				Chill Effect	Cold Damage	Exp.	Total Exp.
1	38	27	40	N/A	5%	0	0
2	40	29	41	N/A	5%	388734	388734
3	42	30	43	N/A	6%	477437	866171
4	44	31	45	N/A	6%	583786	1449957
5	46	33	47	N/A	7%	710359	2160316
6	48	34	49	N/A	7%	1355511	3515827
7	50	35	51	N/A	8%	1138877	4654704
8	52	37	53	N/A	8%	1368233	6022937
9	54	38	55	N/A	9%	1638338	7661275
10	56	39	57	N/A	9%	1956648	9617923
11	58	41	58	N/A	10%	3655184	13273107
12	60	42	60	N/A	10%	3017327	16290434
13	62	43	62	N/A	11%	3576232	19866666
14	64	44	64	N/A	11%	4231667	24098333
15	65	45	65	N/A	12%	2395078	26493411
16	66	46	66	N/A	12%	8421063	34914474
17	67	46	67	N/A	13%	16159983	51074457
18	68	47	68	N/A	13%	41170367	92244824
19	69	48	69	N/A	14%	86794448	179039272
20	70	48	70	N/A	14%	157405063	336444335
21	72	50	72	N/A	15%	N/A	N/A
22	74	N/A	N/A	N/A	15%	N/A	N/A
23	76	N/A	N/A	N/A	16%	N/A	N/A
24	78	N/A	N/A	N/A	16%	N/A	N/A
25	80	N/A	N/A	N/A	17%	N/A	N/A
26	82	N/A	N/A	N/A	17%	N/A	N/A
27	84	N/A	N/A	N/A	18%	N/A	N/A
28	86	N/A	N/A	N/A	18%	N/A	N/A
29	88	N/A	N/A	N/A	19%	N/A	N/A
30	90	N/A	N/A	N/A	19%	N/A	N/A
31	91	N/A	N/A	N/A	19%	N/A	N/A
32	92	N/A	N/A	N/A	20%	N/A	N/A
33	93	N/A	N/A	N/A	20%	N/A	N/A
34	94	N/A	N/A	N/A	20%	N/A	N/A
35	95	N/A	N/A	N/A	20%	N/A	N/A
36	96	N/A	N/A	N/A	21%	N/A	N/A
37	97	N/A	N/A	N/A	21%	N/A	N/A
38	98	N/A	N/A	N/A	21%	N/A	N/A
39	99	N/A	N/A	N/A	21%	N/A	N/A
40	100	N/A	N/A	N/A	22%	N/A	N/A

Gem quality

Type	Additional Effects per 1-20% Quality	Weight
Superior	Supported Skills deal (0.5-10)% increased Cold Damage	1

Related unique items

The following unique items are related to Bonechill Support:

Item	Base Item		Stats

Version history

Version	Changes
3.15.0d	Bonechill Support now has a Cost and Reservation Multiplier of 130% (previously 140%).
3.15.0	Now has a 140% Cost and Reservation Multiplier (previously 120%). No longer has “Enemies Chilled by Supported Skills take 10-29% increased Cold Damage over Time” or “Enemies in Chilling Areas from Supported Skills take 10-29% increased Cold Damage over Time”. Now has “Supported Skills deal 5-14% more Cold Damage”.
3.5.0	Bonechill Support has been added to the game.