Blight

Blight is a channelling spell that deals chaos damage over time to all enemies in the area in front of the caster.

Skill functions and interactions

• Damage over time: Modifiers to spell, chaos damage and damage over time affect the damage over time component of this spell.
• Area of effect: Increasing or decreasing the area works as expected, but area damage (from e.g. Concentrated Effect SupportConcentrated Effect SupportSupport, AoE
  Icon: o
  Level: (1-20)
  Cost & Reservation Multiplier: 140%Requires Level 18Supports any skill with an area of effect, regardless of whether that skill deals damage.Supported Skills deal (25-39)% more Area Damage
  Supported Skills have 30% less Area of Effect
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Area 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.) does not apply.
• Blight does not hit and therefore cannot be supported by added damage supports such as Added Chaos Damage SupportAdded Chaos Damage SupportChaos, Support
  Icon: H
  Level: (1-20)
  Cost & Reservation Multiplier: 120%Requires Level 31Supports any skill that hits enemies.Supported Skills have (18-154) to (26-231) added Chaos Damage
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Chaos 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 cannot confer the effects of supports such as Blind SupportBlind SupportSupport
  Icon: x
  Level: (1-20)
  Cost & Reservation Multiplier: 110%Requires Level 8Supports any skill that hits enemies.Supported Skills have 10% chance to Blind enemies on hit
  Supported Skills have (0-38)% increased Blinding duration
  
  Additional Effects From 1-20% Quality:
  (0.5-10)% increased Blind 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 Skill Gem you wish to augment. Right click to remove from a socket. or Hextouch SupportHextouch SupportSupport, Hex, Trigger
  Icon: &
  Level: (1-20)
  Cost & Reservation Multiplier: 130%Requires Level 38Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.Supported Skills apply supported Curses on Hit
  You cannot Cast Supported Curse Spells
  35% less Effect of Supported Curses
  Supported Skills have (50-31)% reduced Curse Duration
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (0.5-10)% increased Curse DurationThis 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.. Additionally, on hit effects such as Leech, poison, or life gain on hit will not occur while using Blight.
• See Channelling for more information.

Gem level progression

Level			Mana Cost	Chaos Damage per sec	Radius	Exp.	Total Exp.
1	1	0	2	3.9	N/A	0	0
2	2	0	2	4.4	N/A	70	70
3	4	16	2	5.5	N/A	308	378
4	7	22	2	7.5	N/A	1554	1932
5	11	31	2	10.5	N/A	6667	8599
6	16	41	2	15.4	N/A	26047	34646
7	20	50	2	20.3	N/A	49725	84371
8	24	58	2	26.3	N/A	95714	180085
9	28	67	3	33.6	N/A	169595	349680
10	32	75	3	42.4	N/A	283759	633439
11	36	83	3	53	N/A	453996	1087435
12	40	92	3	65.8	N/A	703128	1790563
13	44	100	4	81.1	N/A	1061223	2851786
14	48	109	4	99.4	N/A	2065870	4917656
15	52	117	4	121.3	N/A	2507110	7424766
16	56	125	4	147.4	N/A	5798936	13223702
17	60	134	4	178.5	N/A	15083919	28307621
18	64	142	5	215.4	N/A	27792735	56100356
19	67	148	5	247.5	N/A	43869739	99970095
20	70	155	5	283.9	N/A	242081556	342051651
21	72	159	5	311	N/A	N/A	N/A
22	74	N/A	5	340.3	N/A	N/A	N/A
23	76	N/A	5	372.3	N/A	N/A	N/A
24	78	N/A	5	407	N/A	N/A	N/A
25	80	N/A	5	444.7	N/A	N/A	N/A
26	82	N/A	6	485.6	N/A	N/A	N/A
27	84	N/A	6	530.1	N/A	N/A	N/A
28	86	N/A	6	578.5	N/A	N/A	N/A
29	88	N/A	6	630.9	N/A	N/A	N/A
30	90	N/A	6	687.8	N/A	N/A	N/A
31	91	N/A	6	718	N/A	N/A	N/A
32	92	N/A	6	749.5	N/A	N/A	N/A
33	93	N/A	6	782.3	N/A	N/A	N/A
34	94	N/A	6	816.4	N/A	N/A	N/A
35	95	N/A	6	852	N/A	N/A	N/A
36	96	N/A	6	889	N/A	N/A	N/A
37	97	N/A	6	927.6	N/A	N/A	N/A
38	98	N/A	6	967.7	N/A	N/A	N/A
39	99	N/A	7	1009.5	N/A	N/A	N/A
40	100	N/A	7	1053	N/A	N/A	N/A

Threshold jewels

The following threshold jewels augment Blight:

Note that the jewels may be drop disabled and only be found in the permanent leagues as legacy items.

Item	Limit	Radius	Stats	Drop Enabled
Spreading RotSpreading Rot Cobalt JewelLimited to: 1 Radius: Medium(7-13)% increased Chaos Damage With at least 40 Intelligence in Radius, Blight inflicts Withered for 2 seconds With at least 40 Intelligence in Radius, Blight has 30% reduced Cast SpeedThe Cataclysm was but the first act in a play of horrors. The dead lingered, and the living began to rot.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.	1	Medium	(7-13)% increased Chaos Damage With at least 40 Intelligence in Radius, Blight inflicts Withered for 2 seconds With at least 40 Intelligence in Radius, Blight has 30% reduced Cast Speed	0

Related helmet enchantments

The following helmet enchantments affect Blight.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Blight Damage 1	66	Merciless Labyrinth	25% increased Blight Damage	helmet 100
Enchantment Blight Damage 2	75	Eternal Labyrinth	40% increased Blight Damage	helmet 100
Enchantment Blight Area Of Effect 1	66	Merciless Labyrinth	16% increased Blight Area of Effect	helmet 100
Enchantment Blight Area Of Effect 2	75	Eternal Labyrinth	24% increased Blight Area of Effect	helmet 100
Enchantment Blight Secondary Skill Duration 1	66	Merciless Labyrinth	Blight has 20% increased Hinder Duration	helmet 100
Enchantment Blight Secondary Skill Duration 2	75	Eternal Labyrinth	Blight has 30% increased Hinder Duration	helmet 100

Version history

Version	Changes
2.6.0	Blight gains 1 additional unit of radius every 5 levels.
2.4.2	Added new Intelligence skill - Blight: Apply a debuff to enemies in front of you which deals chaos damage over time. Enemies who aren't already debuffed by Blight are also hindered for a shorter secondary duration, slowing their movement. Continued channelling adds layers of damage to the debuff, each with their own duration.