Cast when Stunned SupportSupport, Spell, Trigger Icon: ! Level: (1-20) Cooldown Time: 0.10 sec Can Store 1 Use(s)Requires Level 38Each 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.(50-69)% chance to Trigger Supported Spells when you are Stunned, or Block a Stunning Hit
Additional Effects From 1-20% Quality: (1-20)% 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 Skill Gem you wish to augment. Right click to remove from a socket.
Acquisition Drop level: 38Vendor Offer 1x Scroll FragmentMetadata Item class: Support Gem Metadata ID: Metadata/Items/Gems/SupportGemCastOnStunned
Cast when Stunned is a support gem that grants supported spells a chance to trigger when the player is stunned or blocks a stunning hit.
Different spells supported by Cast when Stunned are independent: when the character is stunned or blocks a stunning hit, each supported spell rolls its own chance to trigger, and each spell that succeeds its chance check will trigger and go on its own cooldown. Because multiple copies of the same spell (or a transfigured variant) with the same trigger share a cooldown, supporting duplicate spells with Cast when Stunned will only result in two chance rolls, never two triggers.
Triggered spells will target the location of the enemy that stunned the player. Skills that don't target a location like Ice NovaIce NovaSpell, AoE, Cold, Nova Level: (1-20) Cost: (8-23) Mana Cast Time: 0.70 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 230% AoE Radius: 30Requires Level 12A circle of ice expands from the caster.Deals (23-988) to (34-1481) Cold Damage Base radius is (2.6-3) metres
Additional Effects From 1-20% Quality: Base radius is (0.015-0.3) metres
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket. will still occur at the player.
Cast when Stunned cannot cause spells to trigger from self-damage, as this cannot stun.
Compared to 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 Trigger
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 Skill Gem you wish to augment. Right click to remove from a socket., Cast when Stunned compares favorably in several regards: it has no damage penalty, no cost multiplier, no gem level limitations, and a lower cooldown. However, whether its condition is easier or harder to fulfill depends on the player's life, mitigation, and stun modifiers like ValyriumValyrium Moonstone RingRequires Level 38+(15-25) to maximum Energy Shield+(30-40) to maximum Energy Shield +(30-40)% to Fire Resistance -40% to Cold Resistance Stun Threshold is based on Energy Shield instead of LifeThey will rise and fall in fire and blood..
Builds that want to be reliably stunned would ideally want at least one of the following:
100% cold damage taken as non-cold damage - this method is non-conditional and more reliable, but requires more investment through specific equipment or jewels.
Eyes of the GreatwolfEyes of the Greatwolf Greatwolf TalismanTalisman Tier: 4 Requires Level 52<Two random talisman implicit modifiers>Implicit Modifier magnitudes are doubledCorruptedI am but a vessel for a greater force. It acts through me. Speaks through me. Decides what lives and dies through me. And will change the world through me. (Cold to Fire/Lightning): most efficient.
Any two of Avian Twins Talisman, Mahuxotl's MachinationMahuxotl's Machination Steel Kite ShieldChance to Block: 26% Armour: (146-167) Energy Shield: (30-35) Movement Speed: -3%Requires Level 46, 60 Str, 60 IntCorrupted Soul Divine Flesh Eternal Youth Everlasting Sacrifice Immortal Ambition Vaal PactThe Banished Architect sought to employ all the darkest secrets of the Vaal... at the same time. (Divine Flesh), or Tempered by War: can be more defensive if already using Divine Flesh or Tempered by War.
Enemies cannot deal critical strikes - these methods are more universally accessible but have conditional uptime.
Poison Mastery's Enemies Poisoned by you cannot deal Critical Strikes: requires some investment into Poison chance, not reliable during immunity phases.
Stun Mastery's Hits against you Cannot be Critical Strikes if you've been Stunned Recently[1]: fairly reliable uptime, requires caution as certain modifiers that guarantee crits (Ultimatum mods, Ursine Funerary Altar) + modifiers that can cause you to take cold damage (e.g. map mods, Eater Eldritch Altars, or Taste of HateTaste of Hate Sapphire FlaskLasts 8.00 Seconds Consumes 20 of 50 Charges on use +40% to Cold Resistance +5% to Maximum ColdResistanceRequires Level 18(10-15)% of Physical Damage from Hits taken as Cold Damage during Effect Gain (10-15)% of Physical Damage as Extra Cold Damage during effect 30% chance to Avoid being Chilled during Effect 30% chance to Avoid being Frozen during EffectA sip will freeze your lips, A swig will chill your heart, A glass will still your soul.Right click to drink. Can only hold charges while in belt. Refills as you kill monsters.) can make it difficult to reactivate effect if it falls off after 4 seconds
Garb of the EphemeralGarb of the Ephemeral Savant's RobeEnergy Shield: (322-435) Movement Speed: -3%Requires Level 56, 600 Str, 752 Int<One to three random Synthesis implicit modifiers>(180-230)% increased Energy Shield +600 Strength and Intelligence Requirement Gain a Divine Charge on Hit +10 to maximum Divine Charges You gain Divinity for 10 seconds on reaching maximum Divine Charges Lose all Divine Charges when you gain Divinity Nearby 5.0m radius Allies' Action Speed cannot be modified to below Base Value Nearby 6.0m radius Enemies cannot deal Critical StrikesExceptional men and women of strong will can flicker a spark, but something much greater is needed to unleash the wildfire of true divine flames.: prevents the use of other body armours, but permanent uptime; can be equipped by an Animate GuardianAnimate GuardianSpell, Minion Level: (1-20) Cost: (11-20) Mana Cast Time: 0.60 secRequires Level 28Animates a melee weapon or armour, attaching it to an invisible Guardian that fights by your side. Animating multiple items attaches them to the same Guardian. You cannot animate unidentified items. Cannot be used by Traps or Mines.Minions have (0-38)% more Maximum Life Can use Items requiring up to Level (33-100) Minion deals (0-38)% more Damage
Additional Effects From 1-20% Quality: (2-40)% increased Minion Movement Speed
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.; not reliable during immunity phases.
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
Item acquisition
Cast when Stunned Support can drop anywhere.
Recipes
Cast when Stunned Support can be created from the following recipes:
Amount
Part
Description
Meta
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 corruptedlevel 21 Spell gem
A
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
A
7
Dialla's SubjugationDialla's Subjugation7Support 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 corruptedsupport gem with 23% quality
A
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
A
3
Gemcutter's PromiseGemcutter's Promise3Gem 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 gem with 20% quality
A
1
Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Random gem with 1–20% quality
A
1
The VoidThe Void1Reach into the Void and claim your prize.
Random divination card set exchange
A
Vendor reward
This item can be bought at the listed NPC vendors, after completing the following quests:
Forbidden ShakoForbidden Shako Great CrownArmour: (143-161) Energy Shield: (29-33)Requires Level 68, 59 Str, 59 IntSocketed Gems are Supported by Level (1-10) <random Support Gem> Socketed Gems are Supported by Level (25-35) <random Support Gem> +(25-30) to all AttributesThe Azmeri must never touch the Tears of Maji, lest Viridi weep.
68
Socketed Gems are Supported by Level (1-10) <random Support Gem> Socketed Gems are Supported by Level (25-35) <random Support Gem> +(25-30) to all Attributes
The Hungry LoopThe Hungry Loop Unset RingRequires Level 70Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems <Consumed support gem modifier>Be careful where you put your finger.
70
Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems
Now has a cooldown of 0.1 seconds at all gem levels (previously 0.25). Quality now provides 0-20% chance to Trigger Supported Spells when you are Stunned, or Block a Stunning Hit (previously Supported Skills deal 0-10% increased Damage).
Quality on the Divergent Cast when Stunned Support now provides Supported Skills deal 0-10% increased Damage (previously 0-20% chance to Trigger Supported Spells when you are Stunned, or Block a Stunning Hit).
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Ice NovaIce NovaSpell, AoE, Cold, Nova
will still occur at the player. 
Cast when Damage Taken SupportCast when Damage Taken SupportSupport, Spell, Trigger
, Cast when Stunned compares favorably in several regards: it has no damage penalty, no cost multiplier, no gem level limitations, and a lower cooldown. However, whether its condition is easier or harder to fulfill depends on the player's life, mitigation, and stun modifiers like 
ValyriumValyrium
. 
Eyes of the GreatwolfEyes of the Greatwolf
The Cataclysm
The Cataclysm
13Level 21 Spell Gem
Gift of the Gemling Queen
9Level 20 Support GemOur Lady Dialla,
Dialla's Subjugation
7Support Gem
The Fox
6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox."
Gemcutter's Promise
3Gem
Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item
The Void
1Reach into the Void and claim your prize.
Night's Hold
Forbidden Shako
The Hungry Loop
