Cast while Channelling Support

Cast while Channelling SupportSupport, Channelling, Spell, Trigger
Icon: WRequires Level 38Must support both a channelling skill and a non-channelling spell skill to work. The channelling skill will trigger a spell periodically while channelling. Cannot support skills used by totems, traps, or mines. Vaal skills and skills that reserve mana cannot be triggered.Per 1% Quality:
Supported Channelling Skills deal 0.5% increased Damage
Supported Triggered Spells deal 0.5% increased DamageTrigger a Supported Spell every (0.45-0.35) seconds while Channelling Supported Skills
You cannot Cast Supported Triggerable Spells directly
Supported Triggered Spells deal (0-9)% more 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 Active Skill Gem you wish to augment. Right click to remove from a socket.Acquisition
Level: 38Purchase Costs

Normal

1x Orb of Alchemy

Sell Price
1x Scroll FragmentMiscellaneous
Item class: Support Skill Gems
Metadata ID: Metadata/Items/Gems/SupportGemCastWhileChannelling

For the awakened variant, see Awakened Cast while Channelling Support.

Cast while Channelling Support is a support gem that triggers linked non-channeling spells while the character is using a channelled 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 SupportCast On Critical Strike SupportSupport, Spell, Trigger
  Icon: &Requires Level 38Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills that reserve mana cannot be triggered.Per 1% Quality:
  Supported Skills have 1% increased Attack Critical Strike Chance
  Supported Skills have 1% increased Spell Critical Strike ChanceSupported Attacks will Trigger a Supported Spell when you Crit an Enemy
  Supported Skills deal (20-39)% more Spell Damage
  You cannot Cast Supported Triggerable Spells directlyThis 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., 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 SupportCast On Critical Strike SupportSupport, Spell, Trigger
  Icon: &Requires Level 38Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills that reserve mana cannot be triggered.Per 1% Quality:
  Supported Skills have 1% increased Attack Critical Strike Chance
  Supported Skills have 1% increased Spell Critical Strike ChanceSupported Attacks will Trigger a Supported Spell when you Crit an Enemy
  Supported Skills deal (20-39)% more Spell Damage
  You cannot Cast Supported Triggerable Spells directlyThis 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., 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 SupportSpell Totem SupportSupport, Spell, Totem
  Icon: T
  Mana Multiplier: 200%Requires Level 8Supports spell skills that are not triggered. Instead of casting that spell, you will summon a totem that casts the spell for you.Per 1% Quality:
  1% increased Totem Placement speedSupported Skills will summon a Totem which uses that Skill
  Totem lasts 8 seconds
  Supported Skills deal (35-26)% less Damage
  Spells Cast by Totem have 30% less Cast SpeedThis 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.: Cast while Channelling cannot support a skill gem that is supported by Spell Totem Support gem.

Gem level progression

Level				Casting Interval	more Damage	Exp.	Total Exp.
1	38	27	40	0.45s	N/A	0	0
2	40	29	41	0.44s	N/A	388,734	388,734
3	42	30	43	0.44s	1%	477,437	866,171
4	44	31	45	0.43s	1%	583,786	1,449,957
5	46	33	47	0.43s	2%	710,359	2,160,316
6	48	34	49	0.42s	2%	1,355,511	3,515,827
7	50	35	51	0.42s	3%	1,138,877	4,654,704
8	52	37	53	0.41s	3%	1,368,233	6,022,937
9	54	38	55	0.41s	4%	1,638,338	7,661,275
10	56	39	57	0.4s	4%	1,956,648	9,617,923
11	58	41	58	0.4s	5%	3,655,184	13,273,107
12	60	42	60	0.39s	5%	3,017,327	16,290,434
13	62	43	62	0.39s	6%	3,576,232	19,866,666
14	64	44	64	0.38s	6%	4,231,667	24,098,333
15	65	45	65	0.38s	7%	2,395,078	26,493,411
16	66	46	66	0.37s	7%	8,421,063	34,914,474
17	67	46	67	0.37s	8%	16,159,983	51,074,457
18	68	47	68	0.36s	8%	41,170,367	92,244,824
19	69	48	69	0.36s	9%	86,794,448	179,039,272
20	70	48	70	0.35s	9%	157,405,063	336,444,335
21	72	50	72	0.35s	10%	N/A	N/A
22	74	N/A	N/A	0.34s	10%	N/A	N/A
23	76	N/A	N/A	0.34s	11%	N/A	N/A
24	78	N/A	N/A	0.33s	11%	N/A	N/A
25	80	N/A	N/A	0.33s	12%	N/A	N/A
26	82	N/A	N/A	0.32s	12%	N/A	N/A
27	84	N/A	N/A	0.32s	13%	N/A	N/A
28	86	N/A	N/A	0.31s	13%	N/A	N/A
29	88	N/A	N/A	0.31s	14%	N/A	N/A
30	90	N/A	N/A	0.3s	14%	N/A	N/A
31	91	N/A	N/A	0.3s	14%	N/A	N/A
32	92	N/A	N/A	0.3s	15%	N/A	N/A
33	93	N/A	N/A	0.3s	15%	N/A	N/A
34	94	N/A	N/A	0.29s	15%	N/A	N/A
35	95	N/A	N/A	0.29s	15%	N/A	N/A
36	96	N/A	N/A	0.29s	16%	N/A	N/A
37	97	N/A	N/A	0.29s	16%	N/A	N/A
38	98	N/A	N/A	0.28s	16%	N/A	N/A
39	99	N/A	N/A	0.28s	16%	N/A	N/A
40	100	N/A	N/A	0.28s	17%	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
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 (Q23)	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
13	The CataclysmThe Cataclysm13Level 21 Spell Gem CorruptedThe mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.	random corrupted level 21 Spell 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 (Q20)	Automatic

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	✓

Mods

Name	Generation Type		Stats	Spawn Weighting
The Shaper's	Prefix	68	Socketed Gems are Supported by Level 18 Cast While Channelling	grants_2h_support 0 attack_staff 0 staff_shaper 500 warstaff_shaper 500 default 0
The Shaper's	Prefix	75	Socketed Gems are Supported by Level 20 Cast While Channelling	grants_2h_support 0 attack_staff 0 staff_shaper 500 warstaff_shaper 500 default 0

Version history

Version	Changes
2.5.0	Introduced to the game.