Cast when Stunned Support

Lua error in Module:Item2/core at line 500: The "class_id" parameter is required.. Cast when Stunned is a support gem that causes a linked spell to trigger when the player is stunned.

Skill functions and interactions

Blocking: Block recovery animation for blocking a hit that would stun does count as actually being stunned.

Cast when Stunned targets the enemy which stunned the player. Spells that don't have targeting, like Discharge or Ice Nova, will be cast on the character as usual.

When the character is stunned, the chance to activate supported spells is rolled individually for each linked spell, then all the spells that succeeded this chance check will activate at once. Multipe copies of the same spell cannot activate at the same time, only one can, however linking multiple copies of the same spell increases the chance that at least one of them activates.

After that the global CwS cooldown occurs, which is currently 250ms. Getting stunned during cooldown time will not cause any supported spells to activate, even if you have multiple CwS groups.

Not Compatible with: Flame Totem

Gem level progression

Level				Cast Chance	Exp.	Total Exp.
1	38	27	40	50%	0	0
2	40	29	41	51%	388734	388734
3	42	30	43	52%	477437	866171
4	44	31	45	53%	583786	1449957
5	46	33	47	54%	710359	2160316
6	48	34	49	55%	1355511	3515827
7	50	35	51	56%	1138877	4654704
8	52	37	53	57%	1368233	6022937
9	54	38	55	58%	1638338	7661275
10	56	39	57	59%	1956648	9617923
11	58	41	58	60%	3655184	13273107
12	60	42	60	61%	3017327	16290434
13	62	43	62	62%	3576232	19866666
14	64	44	64	63%	4231667	24098333
15	65	45	65	64%	2395078	26493411
16	66	46	66	65%	8421063	34914474
17	67	46	67	66%	16159983	51074457
18	68	47	68	67%	41170367	92244824
19	69	48	69	68%	86794448	179039272
20	70	48	70	69%	157405063	336444335
21	72	50	72	70%	N/A	N/A
22	74	N/A	N/A	71%	N/A	N/A
23	76	N/A	N/A	72%	N/A	N/A
24	78	N/A	N/A	73%	N/A	N/A
25	80	N/A	N/A	74%	N/A	N/A
26	82	N/A	N/A	75%	N/A	N/A
27	84	N/A	N/A	76%	N/A	N/A
28	86	N/A	N/A	77%	N/A	N/A
29	88	N/A	N/A	78%	N/A	N/A
30	90	N/A	N/A	79%	N/A	N/A
31	91	N/A	N/A	79%	N/A	N/A
32	92	N/A	N/A	80%	N/A	N/A
33	93	N/A	N/A	80%	N/A	N/A
34	94	N/A	N/A	81%	N/A	N/A
35	95	N/A	N/A	81%	N/A	N/A
36	96	N/A	N/A	82%	N/A	N/A
37	97	N/A	N/A	82%	N/A	N/A
38	98	N/A	N/A	83%	N/A	N/A
39	99	N/A	N/A	83%	N/A	N/A
40	100	N/A	N/A	84%	N/A	N/A

Strategy

Versus Cast when Damage Taken SupportCast when Damage Taken SupportSupport, Spell, Trigger
Icon: !
Level: (1-20)
Cost & Reservation Multiplier: 250%
Cooldown Time: 0.25 sec
Can Store 1 Use(s)Requires Level 38Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.This Gem can only Support Skill Gems requiring Level (38-70) or lower
Supported Skills deal (65-27)% less Damage
Trigger Supported Spells when you take (528-3272) total Damage from Hits

Additional Effects From 1-20% Quality:
Supported Skills require (0.5-10)% reduced amount of Damage taken to TriggerThis 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.

Cast when Stunned has several advantages, which may tip its balance in its favour, depending on your character's build:

Characters who use energy shield or Mind over Matter will typically have more hit points than their Life pool (for purposes of stunning). This also results in more stuns per damage taken.
Unlike Cast when Damage Taken SupportCast when Damage Taken SupportSupport, Spell, Trigger
Icon: !
Level: (1-20)
Cost & Reservation Multiplier: 250%
Cooldown Time: 0.25 sec
Can Store 1 Use(s)Requires Level 38Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.This Gem can only Support Skill Gems requiring Level (38-70) or lower
Supported Skills deal (65-27)% less Damage
Trigger Supported Spells when you take (528-3272) total Damage from Hits

Additional Effects From 1-20% Quality:
Supported Skills require (0.5-10)% reduced amount of Damage taken to TriggerThis 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. , Cast when Stunned does not suffer a damage penalty at any level. However, it is usually still ineffective for damage-dealing purposes.
Most importantly, Cast when Stunned does not have a limit on active skill level. This makes it a better choice for level-dependent skills, since the trigger damage for Cast when Damage Taken SupportCast when Damage Taken SupportSupport, Spell, Trigger
Icon: !
Level: (1-20)
Cost & Reservation Multiplier: 250%
Cooldown Time: 0.25 sec
Can Store 1 Use(s)Requires Level 38Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.This Gem can only Support Skill Gems requiring Level (38-70) or lower
Supported Skills deal (65-27)% less Damage
Trigger Supported Spells when you take (528-3272) total Damage from Hits

Additional Effects From 1-20% Quality:
Supported Skills require (0.5-10)% reduced amount of Damage taken to TriggerThis 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. increases rapidly with level.

Quest reward

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Vendor reward