Efficacy Support

Efficacy Support is a support gem.

Supports any skill that deals damage or has a duration.

Support, Duration. Level: 1–20. Cost & Reservation Multiplier: 130%. Requires Level 8.

Supported Skills deal (15–24)% more Damage over Time
Supported Skills have (15–24)% increased Skill Effect Duration

This 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.

Name	Additional Effects From Quality	Weight
Efficacy Support	Supported Skills deal (0–10)% increased Damage over Time	50

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Related Gems

Name	Additional Effects From Quality	Weight
Efficacy Support	Supported Skills deal (0–10)% increased Damage over Time	50
Anomalous Efficacy Support	Supported Skills have (0–10)% increased Skill Effect Duration	100
Divergent Efficacy Support	Supported Skills have (0–10)% reduced Life Cost Supported Skills have (0–10)% reduced Mana Cost	100

Level Effect

Level	Requires Level	Intelligence	Supported Skills deal 15% more Damage over Time	Supported Skills have 15% increased Skill Effect Duration	Experience
1	8	18	15	15	3,231
2	10	21	15	15	9,569
3	13	25	16	16	28,189
4	17	31	16	16	59,146
5	21	37	17	17	111,192
6	25	43	17	17	193,800
7	29	49	18	18	320,280
8	33	55	18	18	507,839
9	37	61	19	19	554,379
10	40	66	19	19	755,049
11	43	70	20	20	1,016,533
12	46	75	20	20	1,898,602
13	49	79	21	21	1,964,019
14	52	84	21	21	2,573,731
15	55	88	22	22	7,610,839
16	58	93	22	22	13,436,884
17	61	97	23	23	25,050,611
18	64	102	23	23	43,867,388
19	67	106	24	24	242,078,618
20	70	111	24	24
21	72		25	25
22	74		25	25
23	76		26	26
24	78		26	26
25	80		27	27
26	82		27	27
27	84		28	28
28	86		28	28
29	88		29	29
30	90		29	29
31	91		29	29
32	92		30	30
33	93		30	30
34	94		30	30
35	95		30	30
36	96		31	31
37	97		31	31
38	98		31	31
39	99		31	31
40	100		32	32

Efficacy Support is support gem that grants more damage over time, and increased skill effect duration.

Skill functions and interactions

Supported Skills deal #% more Damage over Time and Supported Skills have #% increased Skill Effect Duration are independent from each other so that an skill may benefit from only one modifier, but another skill may benefits from both.
Supported Skills have #% increased Skill Effect Duration This stack additively with Increased Duration Support and multiply with Less Duration Support's mod.

Item acquisition

Efficacy Support can drop anywhere. Drop level: 8.

Recipes

Efficacy Support can be created from the following recipes:

Amount	Part	Description
9	Gift of the Gemling Queen	Random level 20 support gem
7	Dialla's Subjugation	Random corrupted support gem with 23% quality
6	The Fox	Random level 20 gem
8	Dying Anguish	Random level 19 gem with 19% alternative quality
8	The Hook	Random corrupted level 21 gem with 23% alternative quality
3	Gemcutter's Promise	Random gem with 20% quality
1	Gemcutter's Incubator	Random gem with 1–20% quality
1	The Void	Random divination card set exchange

Quest reward

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

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
The Caged Brute Act 1	✓	✗	✗	✗	✗	✗	✗

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 ↓	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
The Caged Brute Act 1 Nessa	✓	✓	✗	✗	✗	✓	✓
A Fixture of Fate Act 3 Siosa	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related modifiers

The following modifiers are related to Efficacy Support:

Name	Level	Stats	Spawn Weighting
The Elder's	68	(45-52)% increased Spell Damage Socketed Gems are Supported by Level 16 Efficacy	sceptre_elder 400 rune_dagger_elder 400 wand_elder 400 default 0
The Elder's	75	(53-56)% increased Spell Damage Socketed Gems are Supported by Level 18 Efficacy	sceptre_elder 200 rune_dagger_elder 200 wand_elder 200 default 0
The Elder's	80	(57-60)% increased Spell Damage Socketed Gems are Supported by Level 20 Efficacy	sceptre_elder 100 rune_dagger_elder 100 wand_elder 100 default 0

Related unique items

The following unique items are related to Efficacy Support:

Item	Base Item	Level	Stats
Forbidden Shako	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 Loop	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