Stormbind

StormbindSpell, AoE, Channelling, Lightning, Duration, Arcane
Level: (1-20)
Cast Time: 0.20 secRequires Level 28Channel to improve runes placed by Stormbind based on the mana you spend channelling this skill. Release to detonate the targeted rune, which will cause other runes to detonate in a chain reaction.Base duration is 12 seconds
Deals (36-444) to (107-1332) Lightning Damage
Runes can be improved 3 times
Runes deal 100% more Damage with Hits and Ailments for each time they have been Improved
50% reduced Movement Speed
A Rune is Improved for each (5-24) Mana Spent
Runes have 30% more Area of Effect for each time they have been ImprovedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop level: 28Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemStormBind

Stormbind is a channelling spell that places runes on the targeted ground as the skill is channelled. These runes hinder enemies standing on it. The gem grants a sub-skill, Rune Blast, which improves runes placed by Stormbind as it is channelled, and releasing the channel detonates the rune and surrounding runes to deal lightning damage.

Skill functions and interactions

Arcane: Stormbind cannot be supported by Archmage SupportArchmage SupportLightning, Arcane, Support, Spell
Icon: ^
Level: (1-20)Requires Level 31Supports spell skills that deal damage with hits and have no reservation. Cannot support arcane skills, Brand skills, Orb skills, Vaal skills, or skills used by totems, traps or mines. Cannot modify the skills of minions.Supported Skills gain Added Lightning Damage equal to (10-19)% of Unreserved Maximum Mana
Supported Skills have added Mana Cost equal to 5% of Unreserved Maximum Mana

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Spell 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 Skill Gem you wish to augment. Right click to remove from a socket.

Stormbind

Area of effect - Multiple runes can hit a single target. A fully improved rune has a base explosion radius of 36.

Using multiple copies of the same stormbind gem will work, because runeblast and stormbind interact with each other even when used from different gems. 1 gem can have support gems that benefit stormbind. The other gem can have support gems that benefit runeblast.

Rune Blast

Runes will always have the same area of effect, but the Rune Blast explosion size will increase by improving the runes and increasing area of effect.

Raising the mana cost increases the number of connected runes improved per cast. Each rune can only be improved once per cast.

There is a maximum of 9 runes improved per cast, because each rune is only connected to 8 runes.

IndigonIndigon
Hubris CircletEnergy Shield: (200-257)Requires Level 69, 154 Int(150-180)% increased Energy Shield
(6-10)% increased maximum Mana
Recover (8-10)% of Life when you use a Mana Flask
Non-instant Mana Recovery from Flasks is also Recovered as Life
(50-60)% increased Cost of Skills for each 200 total Mana Spent Recently
(20-25)% increased Spell Damage for each 200 total Mana you have Spent Recently, up to 2000%Where the body's limits begin,
the mind's limits end. can raise the mana cost.

Rune Blast does not have the same gem tags as Stormbind. It is a generic channelling skill. It can be supported by Cast while Channelling SupportCast while Channelling SupportSupport, Channelling, Spell, Trigger
Icon: W
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires 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 with a reservation cannot be triggered.Trigger a Supported Spell every (0.45-0.35) seconds while Channelling Supported Skills
Supported Triggered Spells deal 30% less Damage

Additional Effects From 1-20% Quality:
Supported Channelling Skills deal (0.5-10)% increased Damage
Supported Triggered Spells deal (0.5-10)% increased 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 Skill Gem you wish to augment. Right click to remove from a socket., Faster Casting SupportFaster Casting SupportSupport, Spell
Icon: f
Level: (1-20)
Cost & Reservation Multiplier: 110%Requires Level 18Supports non-instant spell skills.Supported Skills have (20-39)% increased Cast Speed

Additional Effects From 1-20% Quality:
Supported Skills have (0.5-10)% increased 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 Skill Gem you wish to augment. Right click to remove from a socket., Infused Channelling SupportInfused Channelling SupportSupport, Channelling, Duration
Icon: b
Level: (1-20)
Cost & Reservation Multiplier: 130%Requires Level 4Supports any channelling skill, protecting you from damage while you channel it. Cannot support skills used by totems. Cannot modify the skills of minions.Infusion lasts 6 seconds after you finish Channelling
Gain Infusion after Channelling a Supported Skill for (1.6-1) second
Supported Skills deal (15-24)% more Damage
Infusion grants 10% more Damage of Types matching Supported Skill Gem's tags
While Channelling a Supported Skill, take 8% less Damage from Hits of types matching the Skill Gem's Tags

Additional Effects From 1-20% Quality:
Gain Infusion after Channelling a Supported Skill for -(0.02-0.4) secondsThis 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., and Arcane Surge SupportArcane Surge SupportArcane, Support, Spell, Duration
Icon: N
Level: (1-20)
Cost & Reservation Multiplier: 130%Each supported spell will track how much mana you spend on it, granting a buff when the total mana spent reaches a threshold. Cannot support skills used by totems, traps, mines or skills with a reservation.Gain Arcane Surge after Spending a total of (15-400) Mana on
Upfront Costs and Effects of a Supported Skill
Arcane Surge grants (10-20)% increased Cast Speed
Arcane Surge grants (30-58)% increased Mana Regeneration rate
Arcane Surge lasts 4 seconds
Supported Skills deal (10-25)% more Spell Damage while you have Arcane Surge

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Spell 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 Skill Gem you wish to augment. Right click to remove from a socket..

Rune Blast example

Level 20 Skill. 48 mana cost. Rune Blast upgrades 2 runes per cast.

In this example Rune Blast gives 2 times the damage per cast of Stormbind.

Gem level progression

Level			Mana Cost	Lightning Damage	Mana spent	Exp.	Total Exp.
1	28	67	3	36 to 107	5	0	0
2	31	73	3	44 to 131	6	199345	199345
3	34	79	3	53 to 159	7	285815	485160
4	37	85	3	64 to 193	8	401344	886504
5	40	92	3	78 to 234	9	554379	1440883
6	42	96	3	88 to 265	10	477437	1918320
7	44	100	3	100 to 299	11	583786	2502106
8	46	104	3	113 to 338	12	710359	3212465
9	48	109	4	127 to 380	13	1355511	4567976
10	50	113	4	143 to 428	14	1138877	5706853
11	52	117	4	161 to 482	15	1368233	7075086
12	54	121	4	180 to 541	16	1638338	8713424
13	56	125	4	203 to 608	17	1956648	10670072
14	58	130	4	227 to 681	18	3655184	14325256
15	60	134	4	254 to 763	19	3017327	17342583
16	62	138	4	285 to 854	20	7759995	25102578
17	64	142	4	319 to 956	21	15138193	40240771
18	66	146	4	356 to 1068	22	26083825	66324596
19	68	151	5	398 to 1193	23	62620247	128944843
20	70	155	5	444 to 1332	24	211708088	340652931
21	72	159	5	495 to 1486	25	N/A	N/A
22	74	N/A	5	552 to 1657	26	N/A	N/A
23	76	N/A	5	615 to 1846	27	N/A	N/A
24	78	N/A	5	685 to 2056	28	N/A	N/A
25	80	N/A	5	763 to 2288	29	N/A	N/A
26	82	N/A	5	848 to 2545	30	N/A	N/A
27	84	N/A	5	944 to 2831	31	N/A	N/A
28	86	N/A	6	1049 to 3146	32	N/A	N/A
29	88	N/A	6	1165 to 3495	33	N/A	N/A
30	90	N/A	6	1294 to 3882	34	N/A	N/A
31	91	N/A	6	1363 to 4090	35	N/A	N/A
32	92	N/A	6	1436 to 4309	35	N/A	N/A
33	93	N/A	6	1513 to 4539	36	N/A	N/A
34	94	N/A	6	1594 to 4781	36	N/A	N/A
35	95	N/A	6	1679 to 5036	37	N/A	N/A
36	96	N/A	6	1768 to 5304	37	N/A	N/A
37	97	N/A	6	1862 to 5585	38	N/A	N/A
38	98	N/A	6	1960 to 5881	38	N/A	N/A
39	99	N/A	6	2064 to 6192	39	N/A	N/A
40	100	N/A	6	2173 to 6519	39	N/A	N/A

Item acquisition

Stormbind can drop anywhere.

Recipes

Stormbind 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 corrupted level 21 Spell gem	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

Quest reward

This item is given as a quest reward for the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Sever the Right Hand Act 3	✓	✗	✗	✗	✗	✓	✗

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 ↓
A Fixture of Fate Act 3 Siosa	✓
Sever the Right Hand Act 3 Clarissa	✓	✓	✗	✗	✗	✓	✓
Fallen from Grace Act 6 Lilly Roth	✓

Threshold jewels

The following threshold jewels augment Stormbind:

Note that the jewels may be drop disabled and only be found in the permanent leagues as legacy items.

Item	Limit	Radius	Stats	Drop Enabled

Modifiers

Enchantment

No results found

Other

No results found

Alternate skill effects

Stormbind has the following alternate skill effects:

Item	Effect(s)
Gore Stormbind EffectGore Stormbind EffectSkill Gem EffectYour Stormbind becomes a Gore Effect.	Your Stormbind becomes a Gore Effect.

Version history

Version	Changes
3.17.0	Stormbind now deals 36 to 107 Lightning Damage at gem level 1 (unchanged), up to 444 to 1332 at gem level 20 (previously 306 to 919). Now has 160% Effectiveness of Added Damage at all gem levels (previously 110%).
3.15.0	Received Arcane gem tag.
3.11.0	Fixed a typo in the skill description of Stormbind.
3.10.0	Stormbind has been added to the game.