Act	Quest	NPC	Character
4	The Eternal Nightmare	Petarus and Vanja	All Classes

Act

Quest

NPC

Character

The Eternal Nightmare

Petarus and Vanja

All Classes

Implicit
Cost & Reservation Multiplier: 120% Supported Triggered Spells deal 30% less Damage

Implicit

Cost & Reservation Multiplier: 120%
Supported Triggered Spells deal 30% less Damage

Level	Requires Level	Int	Dex	Trigger a Supported Spell every 0.45 seconds while Channelling Supported Skills	Experience
1	38	40	27	0.45	388,734
2	40	41	29	0.44	477,437
3	42	43	30	0.44	583,786
4	44	45	31	0.43	710,359
5	46	47	33	0.43	1,355,511
6	48	49	34	0.42	1,138,877
7	50	51	35	0.42	1,368,233
8	52	53	37	0.41	1,638,338
9	54	55	38	0.41	1,956,648
10	56	57	39	0.4	3,655,184
11	58	58	40	0.4	3,017,327
12	60	60	42	0.39	3,576,232
13	62	62	43	0.39	4,231,667
14	64	64	44	0.38	2,395,078
15	65	65	45	0.38	8,421,063
16	66	66	46	0.37	16,159,983
17	67	67	46	0.37	41,170,367
18	68	68	47	0.36	86,794,448
19	69	69	48	0.36	157,405,063
20	70	70	48	0.35
21	72			0.35
22	74			0.34
23	76			0.34
24	78			0.33
25	80			0.33
26	82			0.32
27	84			0.32
28	86			0.31
29	88			0.31
30	90			0.3
31	91			0.3
32	92			0.3
33	93			0.3
34	94			0.29
35	95			0.29
36	96			0.29
37	97			0.29
38	98			0.28
39	99			0.28
40	100			0.28

Level

Requires Level

Int

Dex

Trigger a Supported Spell every 0.45 seconds while Channelling Supported Skills

Experience

0.45

388,734

0.44

477,437

0.44

583,786

0.43

710,359

0.43

1,355,511

0.42

1,138,877

0.42

1,368,233

0.41

1,638,338

0.41

1,956,648

0.4

3,655,184

0.4

3,017,327

0.39

3,576,232

0.39

4,231,667

0.38

2,395,078

0.38

8,421,063

0.37

16,159,983

0.37

41,170,367

0.36

86,794,448

0.36

157,405,063

0.35

0.34

0.33

0.32

0.31

0.3

0.29

0.28

100

0.28

Key	Value
Cost	iLvl 1: Normal: 1xOrb of Alchemy
DropLevel	38
BaseType	Cast while Channelling Support
Class	Support Gems
Icon	W
ItemType	Metadata/Items/Gems/SupportGemCastWhileChannelling
Reference	poe.ninja, Community Wiki

Key

Value

Cost

iLvl 1: Normal: 1x

Orb of Alchemy

DropLevel

BaseType

Cast while Channelling Support

Class

Support Gems

Icon

ItemType

Metadata/Items/Gems/SupportGemCastWhileChannelling

Reference

poe.ninja, Community Wiki

Icon	Name
	Charged Dash Channel to project an illusion which you steer. You gain stages while it moves, until it stops at a maximum total distance. Waves of area damage frequently pulse along its path, based on your attack speed. Stop channelling to teleport to the illusion, dealing a final wave of damage. Requires a Melee Weapon.
	Blade Flurry Repeatedly hit enemies in a circle in front of you while channelling, dealing damage to and around the enemy. The damage is continually boosted while channelling. You unleash an additional hit for each stage reached once the channelling ends. Requires a Dagger, Claw or One-Handed Sword.
	Blade Flurry of Incision Repeatedly hit enemies in a circle in front of you while channelling, dealing damage to and around the enemy. The critical strike chance is continually boosted while channelling. You unleash an additional hit for each stage reached once the channelling ends. Requires a Dagger, Claw or One-Handed Sword.
	Storm Burst Unleash orbs of energy while you channel that repeatedly jump towards the targeted location until their duration expires, dealing damage in small area after each jump. When you stop channelling, all remaining orbs explode, dealing higher damage in a larger area.
	Incinerate Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you. When you stop channelling you release a wave of fire damage over a wide and long area that will apply a powerful Ignite.
	Incinerate of Expanse Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you. When you stop channelling you release a slow-moving wave of fire damage over a very large area that will apply a powerful Ignite.
	Incinerate of Venting Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you.
	Cyclone Channel this skill to move towards a targeted location while spinning constantly attacking enemies in an area around you. While channelling this skill, you cannot be knocked back.
	Cyclone of Tumult Channel this skill to move towards a targeted location while spinning constantly attacking enemies in an area around you. While channelling this skill, you cannot be knocked back.
	Flameblast Channels to build up a large explosion, which is released when you stop using the skill. The longer you channel, the larger the area of effect and damage of the explosion.
	Flameblast of Celerity Channels to build up an explosion, which is released when you stop using the skill or automatically at maximum stages. The longer you channel, the larger the area of effect and damage of the explosion.
	Flameblast of Contraction Channels to concentrate an explosion, which is released when you stop using the skill. The longer you channel, the larger the damage of the explosion, but the smaller the area.
	Lightning Tendrils While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a semicircular area in front of you.
	Lightning Tendrils of Eccentricity While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a semicircular area in front of you.
	Lightning Tendrils of Escalation While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a growing semicircular area in front of you.
	Wither Casts a debilitating debuff on enemies in an area, hindering their movement and also inflicts the Withered debuff, which increases the Chaos Damage they take and can stack up to 15 times.
	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.
	Blight of Contagion 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. The damaging debuff is spread by Contagion.
	Blight of Atrophy 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 longer secondary duration, slowing their movement and reducing their life regeneration rate. Continued channelling adds layers of damage to the debuff, each with their own duration.
	Scorching Ray Unleash a beam of fire that burns enemies it touches. Remaining in the beam raises the burning, adding a portion of the beam's damage in stages. Inflicts Fire Exposure at maximum stages. Enemies who leave the beam continue to burn for a duration. Increasing cast speed also increases the rate at which the beam turns.
	Scorching Ray of Immolation Unleash a beam of fire that burns enemies it touches. Remaining in the beam raises the burning, adding a portion of the beam's damage in stages. Enemies who leave the beam continue to burn for a duration. Increasing cast speed also increases the rate at which the beam turns.
	Scourge Arrow Channel to infuse an arrow with chaos, gaining stages while it is held. Release to fire it, leaving spore pods in its wake. Each spore pod blooms, firing thorn arrows, which travel for a short time before dissipating. Modifiers that cause additional projectiles to be fired will only apply to the initial arrows, and the spore pods will be divided between those arrows.
	Winter Orb Channel to conjure an orb above you, which pelts nearby enemies with projectiles that impact the ground and explode. Channelling for longer builds up stages on the skill. When you stop channelling, the stages decay over a duration.
	Divine Ire Channelling draws in energy around you to repeatedly build up stages, damaging a number of nearby enemies when you do so. Release to unleash this energy in a burst around you and a beam in front of you. Modifiers to area of effect do not affect the beam. Maximum of 10 Stages.
	Divine Ire of Holy Lightning Channelling draws in energy around you to repeatedly build up stages, damaging a number of nearby enemies when you do so. Release to unleash this energy in a powerful burst around you. Maximum of 10 Stages.
	Divine Ire of Disintegration Channelling draws in energy around you to repeatedly build up stages. Release to unleash this energy in a beam in front of you. Modifiers to area of effect do not affect this skill. Maximum of 10 Stages.
	Stormbind Channel to spread runes on the ground in a growing pattern. The runes fade away after a duration, or will be immediately removed and deal damage in a circular area when detonated by Rune Blast. Enemies standing on the runes are Hindered, reducing their movement speed.
	Stormbind of Teleportation Channel to spread runes on the ground in a growing pattern. The runes fade away after a duration, or will be immediately removed and deal damage in a circular area when detonated by Rune Blast. Enemies standing on the runes are Hindered, reducing their movement speed.
	Vaal Blade Flurry Channel to create an expanding circle area around you that blinds enemies within it. When you stop channelling, deals damage in a smaller area around each enemy in the circle. Requires a Dagger, Claw or One-Handed Sword.
	Snipe Channel to charge up your bow, gaining stages. Release to trigger one supported bow skill for each stage gained. If there are no supported skills, but at least one stage was gained, this skill will fire its own arrow instead. Cannot be used by Totems.

Icon

Name

Charged Dash

Channel to project an illusion which you steer. You gain stages while it moves, until it stops at a maximum total distance. Waves of area damage frequently pulse along its path, based on your attack speed. Stop channelling to teleport to the illusion, dealing a final wave of damage. Requires a Melee Weapon.

Blade Flurry

Repeatedly hit enemies in a circle in front of you while channelling, dealing damage to and around the enemy. The damage is continually boosted while channelling. You unleash an additional hit for each stage reached once the channelling ends. Requires a Dagger, Claw or One-Handed Sword.

Blade Flurry of Incision

Repeatedly hit enemies in a circle in front of you while channelling, dealing damage to and around the enemy. The critical strike chance is continually boosted while channelling. You unleash an additional hit for each stage reached once the channelling ends. Requires a Dagger, Claw or One-Handed Sword.

Storm Burst

Unleash orbs of energy while you channel that repeatedly jump towards the targeted location until their duration expires, dealing damage in small area after each jump. When you stop channelling, all remaining orbs explode, dealing higher damage in a larger area.

Incinerate

Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you. When you stop channelling you release a wave of fire damage over a wide and long area that will apply a powerful Ignite.

Incinerate of Expanse

Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you. When you stop channelling you release a slow-moving wave of fire damage over a very large area that will apply a powerful Ignite.

Incinerate of Venting

Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you.

Cyclone

Channel this skill to move towards a targeted location while spinning constantly attacking enemies in an area around you. While channelling this skill, you cannot be knocked back.

Cyclone of Tumult

Channel this skill to move towards a targeted location while spinning constantly attacking enemies in an area around you. While channelling this skill, you cannot be knocked back.

Flameblast

Channels to build up a large explosion, which is released when you stop using the skill. The longer you channel, the larger the area of effect and damage of the explosion.

Flameblast of Celerity

Channels to build up an explosion, which is released when you stop using the skill or automatically at maximum stages. The longer you channel, the larger the area of effect and damage of the explosion.

Flameblast of Contraction

Channels to concentrate an explosion, which is released when you stop using the skill. The longer you channel, the larger the damage of the explosion, but the smaller the area.

Lightning Tendrils

While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a semicircular area in front of you.

Lightning Tendrils of Eccentricity

While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a semicircular area in front of you.

Lightning Tendrils of Escalation

While you channel this skill, it releases pulses of electrical energy, dealing lightning damage in a growing semicircular area in front of you.

Wither

Casts a debilitating debuff on enemies in an area, hindering their movement and also inflicts the Withered debuff, which increases the Chaos Damage they take and can stack up to 15 times.

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.

Blight of Contagion

Blight of Atrophy

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 longer secondary duration, slowing their movement and reducing their life regeneration rate. Continued channelling adds layers of damage to the debuff, each with their own duration.

Scorching Ray

Unleash a beam of fire that burns enemies it touches. Remaining in the beam raises the burning, adding a portion of the beam's damage in stages. Inflicts Fire Exposure at maximum stages. Enemies who leave the beam continue to burn for a duration. Increasing cast speed also increases the rate at which the beam turns.

Scorching Ray of Immolation

Unleash a beam of fire that burns enemies it touches. Remaining in the beam raises the burning, adding a portion of the beam's damage in stages. Enemies who leave the beam continue to burn for a duration. Increasing cast speed also increases the rate at which the beam turns.

Scourge Arrow

Channel to infuse an arrow with chaos, gaining stages while it is held. Release to fire it, leaving spore pods in its wake. Each spore pod blooms, firing thorn arrows, which travel for a short time before dissipating. Modifiers that cause additional projectiles to be fired will only apply to the initial arrows, and the spore pods will be divided between those arrows.

Winter Orb

Channel to conjure an orb above you, which pelts nearby enemies with projectiles that impact the ground and explode. Channelling for longer builds up stages on the skill. When you stop channelling, the stages decay over a duration.

Divine Ire

Channelling draws in energy around you to repeatedly build up stages, damaging a number of nearby enemies when you do so. Release to unleash this energy in a burst around you and a beam in front of you. Modifiers to area of effect do not affect the beam. Maximum of 10 Stages.

Divine Ire of Holy Lightning

Channelling draws in energy around you to repeatedly build up stages, damaging a number of nearby enemies when you do so. Release to unleash this energy in a powerful burst around you. Maximum of 10 Stages.

Divine Ire of Disintegration

Channelling draws in energy around you to repeatedly build up stages. Release to unleash this energy in a beam in front of you. Modifiers to area of effect do not affect this skill. Maximum of 10 Stages.

Stormbind

Channel to spread runes on the ground in a growing pattern. The runes fade away after a duration, or will be immediately removed and deal damage in a circular area when detonated by Rune Blast. Enemies standing on the runes are Hindered, reducing their movement speed.

Stormbind of Teleportation

Vaal Blade Flurry

Channel to create an expanding circle area around you that blinds enemies within it. When you stop channelling, deals damage in a smaller area around each enemy in the circle. Requires a Dagger, Claw or One-Handed Sword.

Snipe

Channel to charge up your bow, gaining stages. Release to trigger one supported bow skill for each stage gained. If there are no supported skills, but at least one stage was gained, this skill will fire its own arrow instead. Cannot be used by Totems.

Edit

Cast while Channelling Support

Cast while Channelling Support is a Support gem that trigger linked non-channeling Spell while the character is using a channelling skill.

Skill functions and interactions

Triggered Spell Priority: Cast while Channelling follows the same restrictions as other trigger support gems such as Cast On Critical Strike Support, in that only one spell can be triggered per event. If multiple Spells are linked, the spells will cycle based on the order in which they are socketed.
Casting Interval: Unlike Cast On Critical Strike Support, the listed interval is not a cooldown. Cast while Channelling casts the trigger spell exactly on the listed interval regardless of the cast time of the channeled spell.
Spell Totem Support: Cast while Channelling cannot support a skill gem that is supported by Spell Totem Support gem.

Version history

Version	Changes
3.17.0	Cast while Channelling Support now has "Supported Triggered Spells deal 30% less Damage" at all gem levels.
3.16.0	Now has a 120% Cost and Reservation Multiplier (previously 140% for Attacks, and 100% for Spells).
3.15.0	Trigger skill gems now cost mana. No longer has “Supported Triggered Spells deal 0-9% more Damage”. Quality on the Anomalous Cast While Channeling Support no longer grants “Supported Skills have 0-10% increased Attack and Cast Speed”. It now grants “Supported Skills have 0-10% increased Skill Effect Duration”.
3.12.0	Now has alternative gem quality: Anomalous: Supported Skills have 0.5% increased Attack and Cast Speed Divergent: Supported Skills have 0.5% increased Effect of non-Damaging Ailments on Enemies
2.5.0	Introduced to the game.

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Quest /1

Genus

Level Effect /40

Attribute /7