Cast when Stunned Support PoE

Cast when Stunned Support is a support gem that causes a linked spell to trigger when the player is stunned or blocks a stunning hit.

Each supported spell skill will have a chance to be triggered when you are stunned. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.

Support, Spell, Trigger. Level: 1–20. Cooldown Time: 0.25 sec. Requires Level 38.

You cannot Cast Supported Triggerable Spells directly
(50–69)% chance to Trigger Supported Spells when you are Stunned, or
Block a Stunning Hit

This 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.

Name	Additional Effects From Quality	Weight
Cast when Stunned Support	Supported Skills deal (0–10)% increased Damage	50

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Related Gems

Name	Additional Effects From Quality	Weight
Cast when Stunned Support	Supported Skills deal (0–10)% increased Damage	50
Anomalous Cast when Stunned Support	Supported Skills have (0–20)% increased Skill Effect Duration	100
Divergent Cast when Stunned Support	(0–20)% chance to Trigger Supported Spells when you are Stunned, or Block a Stunning Hit	100

Level Effect

Level	Requires Level	Dexterity	Intelligence	50% chance to Trigger Supported Spells when you are Stunned, or Block a Stunning Hit	Experience
1	38	27	40	50	388,734
2	40	29	41	51	477,437
3	42	30	43	52	583,786
4	44	31	45	53	710,359
5	46	33	47	54	1,355,511
6	48	34	49	55	1,138,877
7	50	35	51	56	1,368,233
8	52	37	53	57	1,638,338
9	54	38	55	58	1,956,648
10	56	39	57	59	3,655,184
11	58	40	58	60	3,017,327
12	60	42	60	61	3,576,232
13	62	43	62	62	4,231,667
14	64	44	64	63	2,395,078
15	65	45	65	64	8,421,063
16	66	46	66	65	16,159,983
17	67	46	67	66	41,170,367
18	68	47	68	67	86,794,448
19	69	48	69	68	157,405,063
20	70	48	70	69
21	72			70
22	74			71
23	76			72
24	78			73
25	80			74
26	82			75
27	84			76
28	86			77
29	88			78
30	90			79
31	91			79
32	92			80
33	93			80
34	94			81
35	95			81
36	96			82
37	97			82
38	98			83
39	99			83
40	100			84

Skill functions and interactions

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 or blocks a stunning hit, 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. Multiple 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.

Strategy

Versus Cast when Damage Taken Support

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 Support , 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 Support increases rapidly with level.

Item acquisition

Cast when Stunned Support can drop anywhere. Drop level: 38.

Recipes

Cast when Stunned Support can be created from the following recipes:

Amount	Part	Description
13	The Cataclysm	Random corrupted level 21 Spell gem
9	Gift of the Gemling Queen	Random level 20 support gem
7	Dialla's Subjugation	Random corrupted support gem with 23% quality
6	The Fox	Random level 20 gem
8	Dying Anguish	Random level 19 gem with 19% alternative quality
8	The Hook	Random corrupted level 21 gem with 23% alternative quality
3	Gemcutter's Promise	Random gem with 20% quality
1	Gemcutter's Incubator	Random gem with 1–20% quality
1	The Void	Random divination card set exchange

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 ↓	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
The Eternal Nightmare Act 4 Petarus and Vanja	✓
Fallen from Grace Act 6 Lilly Roth	✓

Unique items

Item	Level	Stats
Night's Hold	12	Has 1 Socket+2 to Level of Socketed Gems Socketed Gems are Supported by Level 10 Added Chaos Damage Socketed Gems are supported by Level 10 Blind Socketed Gems are supported by Level 10 Cast when StunnedCorrupted
The Hungry Loop	70	Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems