Critical Strike Affliction Support

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Poison is a support gem. It increases the poison damage of linked skills and grants them the ability to poison enemies on hit.

Skill functions and interactions

Damage - The Poison gem deals 10% of a hit's combined chaos and physical damage as chaos damage per second, and lasts 2 seconds by default. ^[1] Separate applications of poison can stack. Poison's damage is affected by the following stats:

Damage Over Time
Damage
Chaos Damage
Poison Damage

Furthermore, Poison "inherits" the damage type of the skill applying it. Stats affecting that skill's damage type will affect the poison damage as well. The following damage type stats also affect poison damage:

Projectile Damage if applied by a Projectile skill^[2]
Area Damage if applied by an Area skill^[3]^[4]
Trap Damage if applied by a Trap^[5]
Mine Damage if applied by a Mine^[5]
Totem Damage if applied by a Totem^[5]
Minion Damage if applied by a Minion^[5]

For example, if Poison is linked to a projectile skill that deals 1000 damage, then Poison deals 100 damage per second. If projectile damage is increased by 10%, then the projectile skill deals 1100 damage and the poison deals (110 * 1.1) = 121 damage per second. In this way, the poison damage "double dips" from changes in these stats.

Skill Effect Duration - Stats that modify skill effect duration will apply to the poison duration, even if the skill does not have the "Duration" gem tag. ^[2]

Note - Enemies killed by the Poison DoT are always credited to the player, even if another source belonging to the player applied the Poison, and even if the player cannot deal damage themselves (such as with the Ancestral Bond keystone passive). For example, if Module Error: No skills found with q_where = skill.active_skill_name="Poison" is linked to skills such as Module Error: Too many skills found with q_where = skill.active_skill_name="Siege Ballista". Please choose only one of the following ids:
TalismanT1SiegeBallista - +4 to maximum number of Summoned Totems, Projectiles Pierce all Targets, Totem lasts 8 seconds, Summons a Totem which uses this Skill, 33% less Attack Speed (page)
SiegeBallistaRoyale - Arrows Pierce (6-7) additional Targets, +1 to maximum number of Summoned Totems, Totem lasts 8 seconds, Summons a Ballista Totem which uses this Skill (page) or Module Error: Too many skills found with q_where = skill.active_skill_name="Raise Zombie". Please choose only one of the following ids:
ExperimenterBossRaiseZombieInvasion - +(3-10) to Maximum Raised Zombies, Minions have 90% more Maximum Life, Minions deal 30% more Damage (page)
NecromancerRaiseZombie - +(3-6) to Maximum Raised Zombies (page), and an enemy dies as a result of a Poison applied by those skills, then the player receives credit for the kill and any gained-on-kill benefits (such as the life, mana, and Power Charges from Module Error: Too many skills found with q_where = skill.active_skill_name="Assassin's Mark". Please choose only one of the following ids:
MonsterAssassinsMark - Base duration is 8.80 seconds, Cursed enemies have a 100% chance to grant a Power Charge when slain, Hits against Cursed Enemies have +1.5% to Critical Strike Chance, Hits against Cursed Enemies have +44% to Critical Strike Multiplier, Cursed enemies grant 22 Life when Killed, Cursed enemies grant 22 Mana when Killed (page)
NecromancerAssassinsMark - Base duration is 8.80 seconds, Cursed enemies have a 100% chance to grant a Power Charge when slain, Hits against Cursed Enemies have +1.5% to Critical Strike Chance, Hits against Cursed Enemies have +44% to Critical Strike Multiplier, Cursed enemies grant 22 Life when Killed, Cursed enemies grant 22 Mana when Killed (page)), not the totem/minion.

Gem level progression

Level			Poison Damage	Exp.	Total Exp.
1	31	52	N/A	0	0
2	34	57	N/A	285815	285815
3	36	60	N/A	252595	538410
4	38	63	N/A	314394	852804
5	40	66	N/A	388734	1241538
6	42	69	N/A	477437	1718975
7	44	72	N/A	583786	2302761
8	46	75	N/A	710359	3013120
9	48	78	N/A	1355511	4368631
10	50	81	N/A	1138877	5507508
11	52	84	N/A	1368233	6875741
12	54	87	N/A	1638338	8514079
13	56	90	N/A	1956648	10470727
14	58	93	N/A	3655184	14125911
15	60	96	N/A	3017327	17143238
16	62	99	N/A	7720126	24863364
17	64	102	N/A	15058455	39921819
18	66	105	N/A	25964218	65886037
19	68	108	N/A	62460771	128346808
20	70	111	N/A	211508743	339855551
21	72	114	N/A	N/A	N/A
22	74	N/A	N/A	N/A	N/A
23	76	N/A	N/A	N/A	N/A
24	78	N/A	N/A	N/A	N/A
25	80	N/A	N/A	N/A	N/A
26	82	N/A	N/A	N/A	N/A
27	84	N/A	N/A	N/A	N/A
28	86	N/A	N/A	N/A	N/A
29	88	N/A	N/A	N/A	N/A
30	90	N/A	N/A	N/A	N/A
31	91	N/A	N/A	N/A	N/A
32	92	N/A	N/A	N/A	N/A
33	93	N/A	N/A	N/A	N/A
34	94	N/A	N/A	N/A	N/A
35	95	N/A	N/A	N/A	N/A
36	96	N/A	N/A	N/A	N/A
37	97	N/A	N/A	N/A	N/A
38	98	N/A	N/A	N/A	N/A
39	99	N/A	N/A	N/A	N/A
40	100	N/A	N/A	N/A	N/A

Quest reward

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Vendor reward

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Version history

Version	Changes
2.2.0	The Poison support gem's mana multiplier has been increased from 125% to 135%. It now has 0.5% poison duration per quality (down from 1%). It has 0% increased Poison Damage at gem level 1 (down from 25%) and gains 2% per gem level (down from 5%).
2.1.1b	Fixed a bug where skills (from both players and monsters) which dealt chaos damage over time were doing far too much damage when supported by Poison.
2.1.0	Added to the game.

References

↑ Bex (November 10, 2015). "Talisman Challenges and Upcoming Items!". Official Path of Exile Forums. Retrieved December 10, 2015.
↑ ^2.0 ^2.1 Bex_GGG (December 15, 2015). "Talisman and Poison Questions and Answers". Official Path of Exile Forums. Retrieved December 15, 2015.
↑ Zephymos (December 21, 2015). "How is it that projectile damage increases secondary effects (poison, ignite) but area damage doesn't?". Reddit. Retrieved February 5, 2015.
↑ anapoe (December 21, 2015). "How is it that projectile damage increases secondary effects (poison, ignite) but area damage doesn't?". Reddit. Retrieved February 5, 2015.
↑ ^5.0 ^5.1 ^5.2 ^5.3 Mark_GGG (August 4, 2014). "Minion damage + ignite double scale?". Official Path of Exile Forums. Retrieved February 13, 2016.

[PoisonBex-1] Bex (November 10, 2015). "Talisman Challenges and Upcoming Items!". Official Path of Exile Forums. Retrieved December 10, 2015.

[TalismanPoisonQA-2] 2.0 ^2.1 Bex_GGG (December 15, 2015). "Talisman and Poison Questions and Answers". Official Path of Exile Forums. Retrieved December 15, 2015.

[area1-3] Zephymos (December 21, 2015). "How is it that projectile damage increases secondary effects (poison, ignite) but area damage doesn't?". Reddit. Retrieved February 5, 2015.

[area2-4] (December 21, 2015). "How is it that projectile damage increases secondary effects (poison, ignite) but area damage doesn't?". Reddit. Retrieved February 5, 2015.

[damagesources-5] 5.0 ^5.1 ^5.2 ^5.3 Mark_GGG (August 4, 2014). "Minion damage + ignite double scale?". Official Path of Exile Forums. Retrieved February 13, 2016.

[1]

[2]

[3]

[4]

[5]

v t e Skills

Skills	Skill gem Transfigured skill gem Vaal skill Cost Reservation

Support	Support gem Awakened support gem Exceptional gem Socket Link

Gem tags	AoE Arcane Attack Aura Blessing Blink Bow Brand Chaining Channelling Chaos Cold Critical Curse Duration Fire Golem Guard Herald Hex Lightning Link Mark Melee Mine Minion Movement Nova Orb Prismatic Projectile Physical Slam Spell Stance Strike Totem Trap Travel Trigger Vaal Warcry

Lists	List of skill gems List of transfigured skill gems List of Vaal skill gems List of support gems List of awakened support gems