Bonechill Support

Bonechill SupportCold, Support
Icon: B
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires Level 38Supports any skill that can chill enemies or create chilling areas.Supported Skills have (25-44)% increased Effect of Chill on Enemies
Enemies Chilled by Supported Skills take (10-29)% increased Cold Damage over Time
Enemies in Chilling Areas from Supported Skills take (10-29)% increased Cold Damage over Time
Enemies Chilled by Supported Skills have Cold Damage taken increased by Chill Effect
Enemies in Chilling Areas from Supported Skills have Cold Damage taken increased by Chill EffectThis 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
Area level: 38Vendor Prices

Normal

1x Orb of Alchemy

Vendor Offer
1x Scroll FragmentMetadata
Item class: Support Skill Gems
Metadata ID: Metadata/Items/Gems/SupportGemBonechill

Bonechill Support is a support gem that provides damage bonuses, mostly for cold damage over time, against enemies that are standing on chilled ground created by the supported skill, or have been chilled by the supported skill.

Skill functions and interactions

While seemingly redundant, the four lines regarding the damage effect are distinct from one another:

1. Chills caused by a hit skill, with a fixed value for Damage Over Time taken
2. Chills caused by an area skill, with a fixed value for Damage Over Time taken
3. Chills caused by a hit skill, with a scaled effect for hit damage taken
4. Chills caused by an area skill, with a scaled effect for hit damage taken

In all four situations the chill must be caused by a skill, regardless of whether the cold damage originates from a piece of gear, or the skill gem itself. If the enemy is affected by multiple sources of chill, (for example, Vortex both hits and creates a chilling area) only the strongest chill will receive the damage bonus. Notably, sources of chill such as Aquamarine Flasks will not provide a damage bonus, since a flask is not a skill, and flasks cannot be linked to support gems.

Chill, and therefore the effect of Bonechill, is capped at 30%. Since freeze is considered a separate debuff, it will not impart any additional damage bonus.

Gem level progression

Level				Chill Effect	Chilled increased Cold DoT	Chill area increased Cold DoT	Exp.	Total Exp.
1	38	27	40	25%	10%	10%	0	0
2	40	29	41	26%	11%	11%	388734	388734
3	42	30	43	27%	12%	12%	477437	866171
4	44	31	45	28%	13%	13%	583786	1449957
5	46	33	47	29%	14%	14%	710359	2160316
6	48	34	49	30%	15%	15%	1355511	3515827
7	50	35	51	31%	16%	16%	1138877	4654704
8	52	37	53	32%	17%	17%	1368233	6022937
9	54	38	55	33%	18%	18%	1638338	7661275
10	56	39	57	34%	19%	19%	1956648	9617923
11	58	41	58	35%	20%	20%	3655184	13273107
12	60	42	60	36%	21%	21%	3017327	16290434
13	62	43	62	37%	22%	22%	3576232	19866666
14	64	44	64	38%	23%	23%	4231667	24098333
15	65	45	65	39%	24%	24%	2395078	26493411
16	66	46	66	40%	25%	25%	8421063	34914474
17	67	46	67	41%	26%	26%	16159983	51074457
18	68	47	68	42%	27%	27%	41170367	92244824
19	69	48	69	43%	28%	28%	86794448	179039272
20	70	48	70	44%	29%	29%	157405063	336444335
21	72	50	72	45%	30%	30%	N/A	N/A
22	74	N/A	N/A	46%	31%	31%	N/A	N/A
23	76	N/A	N/A	47%	32%	32%	N/A	N/A
24	78	N/A	N/A	48%	33%	33%	N/A	N/A
25	80	N/A	N/A	49%	34%	34%	N/A	N/A
26	82	N/A	N/A	50%	35%	35%	N/A	N/A
27	84	N/A	N/A	51%	36%	36%	N/A	N/A
28	86	N/A	N/A	52%	37%	37%	N/A	N/A
29	88	N/A	N/A	53%	38%	38%	N/A	N/A
30	90	N/A	N/A	54%	39%	39%	N/A	N/A
31	91	N/A	N/A	55%	40%	40%	N/A	N/A
32	92	N/A	N/A	56%	41%	41%	N/A	N/A
33	93	N/A	N/A	57%	42%	42%	N/A	N/A
34	94	N/A	N/A	58%	43%	43%	N/A	N/A
35	95	N/A	N/A	59%	44%	44%	N/A	N/A
36	96	N/A	N/A	60%	45%	45%	N/A	N/A
37	97	N/A	N/A	61%	46%	46%	N/A	N/A
38	98	N/A	N/A	62%	47%	47%	N/A	N/A
39	99	N/A	N/A	63%	48%	48%	N/A	N/A
40	100	N/A	N/A	64%	49%	49%	N/A	N/A

Item acquisition

Upgrade paths

This item can be acquired through the following upgrade paths or vendor recipes:

Amount	Ingredient	General Notes	Type
1	BitterdreamBitterdream Shadow SceptreSceptre Quality: +20% Physical Damage: 34.8-52.8 Critical Strike Chance: 6.20% Attacks per Second: 1.25 Weapon Range: 11Requires Level 32, 52 Str, 62 Int22% increased Elemental DamageSocketed Gems are Supported by Level 1 Bonechill Socketed Gems are Supported by Level 1 Hypothermia Socketed Gems are Supported by Level 1 Ice Bite Socketed Gems are Supported by Level 1 Cold Penetration Socketed Gems are Supported by Level 10 Added Cold Damage Socketed Gems are Supported by Level 1 InspirationFight not the cold Forsake hope Be still.	level 1 Bonechill Support and 5 other gems	Manual
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	Automatic
7	Dialla's SubjugationDialla's Subjugation7Superior Support 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 superior Support gem with 23% quality	Automatic
8	Dying AnguishDying Anguish8Level 19 Gem Alternative Quality: +19%Moribund, he gazed upon the journey taken as blood trickled down his chin. His eye closed on the city ahead that he would never call home.	random level 19 gem with 19% alternative quality	Automatic
1	Gemcutter's IncubatorGemcutter's IncubatorAdds an incubated Quality Gem item to an equippable item Item drops after killing # monstersQuality GemRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	random superior gem	Automatic
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	Automatic
3	Gemcutter's PromiseGemcutter's Promise3Superior Gem 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 superior gem with 20% quality	Automatic
1	The VoidThe Void1Reach into the Void and claim your prize.	random divination card set exchange	Automatic

Quest reward

This item is given as a quest reward for the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Eternal Nightmare Act 4	✓	✓	✗	✗	✗	✗	✗

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	✓

Version history

Version	Changes
3.5.0	Bonechill Support has been added to the game.