S-TIER | BUILD SORCERESS SPARK COC STORMWEAVER (@Bigdaddy) | SEASON 4

Build Overview

This Cast on Critical Spark / Arc build for Stormweaver Sorceress is one of the strongest builds of season 0.4. The concept is simple yet devastatingly effective: Spark serves as the main spell to trigger Cast on Crit, which then chains Arc. Arc offers far superior clear compared to Comet thanks to its massive chains that wipe packs instantly.

The build’s core mechanic revolves around Living Bomb placed directly in the Cast on Crit setup. Thanks to Elemental Equilibrium, the remnants generated are converted to lightning, which fuels the build’s scaling. The Stormweaver ascendancy grants +2 limit, allowing up to 3 active Living Bombs simultaneously, preventing new explosions from overwriting previous ones.

Bigdaddy plays this version in one of the most challenging temples in the game (1700 effectiveness), and the build handles it effortlessly. The guide covers 4 variants: the Giga version (mirror tier), the Standard version (without adorned), the Budget version (without Rachiata’s), and the League Start version for beginning the season.

Build Strengths

• Exceptional clear speed: Arc with its massive chains clears packs instantly. T3 mobs and very tanky enemies are killed in one shot thanks to the high temple effectiveness (1700).
• Massive damage scaling: The combination of Cast on Crit + Living Bomb + Elemental Equilibrium creates a lightning damage synergy that scales extremely high. Spark easily exceeds 100,000 tooltip damage without any dedicated offensive support.
• Mana sustain solved: The curse setup with the Kufalad Soul Core generates up to 3000 mana regen per second. No more mana issues, even in intense situations.
• Versatile with 4 variants: From league start to mirror tier, the build works at all budgets. The budget version uses Frost Bomb and Elemental Weakness to compensate for the lack of gear.

Build Weaknesses

• Zero resistances without Headhunter: The Giga version sacrifices resistances for rarity (269% rarity with Anvarius). The first room of the temple can be risky before obtaining Headhunter buffs.
• Blink is clunky: The Blink spell triggers the sprint animation, leaving you exposed to stuns. A legal macro (quick tap) or attacking immediately after Blink is required to cancel the animation.
• Demanding spirit management: The Giga version requires 234 total spirit, which demands a Vertex with spirit corruption and specific gear. Budget versions are more accessible (204 spirit).

Gem Setup by Step

This build offers 7 progression steps from leveling to the final build. Select a step to see the corresponding gem setup.

lv 1-5 lv 6-15 lv 16-31 lv 32-45 lv 46-64 65+ 70+ Arc/Spark CoC

lv 1-5

4 skills • 6 gems

ÉtincelleSpark

Bombe de givreFrost Bomb

Nova de glaceIce Nova

Mur de flammesFlame Wall

lv 6-15

6 skills • 14 gems

ÉtincelleSpark

Orbe des oragesOrb of Storms

Bombe de givreFrost Bomb

Arc électriqueArc

Reliquats de ManaMana Remnants

Mur de flammesFlame Wall

lv 16-31

8 skills • 22 gems

ÉtincelleSpark

Bombe de givreFrost Bomb

Orbe des oragesOrb of Storms

Mur de flammesFlame Wall

Arc électriqueArc

Tempête de manaMana Tempest

Sensibilité aux élémentsElemental Weakness

Reliquats de ManaMana Remnants

lv 32-45

9 skills • 28 gems

ÉtincelleSet 1Spark

Bombe de givreSet 1Frost Bomb

Orbe des oragesSet 1Orb of Storms

Sensibilité aux élémentsSet 2Elemental Weakness

Arc électriqueSet 1Arc

Mur de flammesFlame Wall

Reliquats de ManaMana Remnants

Siphonnage des élémentsSiphon Elements

Tempête de manaMana Tempest

lv 46-64

10 skills • 31 gems

ÉtincelleSet 1Spark

Bombe de givreFrost Bomb

Orbe des oragesSet 1Orb of Storms

Arc électriqueSet 1Arc

Sensibilité aux élémentsSet 2Elemental Weakness

Tempête de manaMana Tempest

Reliquats de ManaMana Remnants

Siphonnage des élémentsSiphon Elements

Mur de flammesFlame Wall

Sceau de pouvoirSet 2Sigil of Power

65+

8 skills • 29 gems

Projection de sortilègesSpellslinger

ÉtincelleSpark

Sceau de pouvoirSigil of Power

Orbe des oragesOrb of Storms

Sensibilité aux élémentsElemental Weakness

Tempête de manaMana Tempest

Reliquats de ManaMana Remnants

Déclenchement lors de CritiquesCast on Critical

70+ Arc/Spark CoC

8 skills • 29 gems

ÉtincelleSpark

Déclenchement lors de CritiquesCast on Critical

Projection de sortilègesSpellslinger

Sensibilité aux élémentsElemental Weakness

Bombe de givreFrost Bomb

Sceau de pouvoirSigil of Power

Tempête de manaMana Tempest

Reliquats de ManaMana Remnants

Recommended Equipment

• Wand (Dueling Wand): The most important item. Look for damage as extra lightning, spell damage, and damage as extra cold as prefixes. As suffixes: +level of all spells, critical strike chance, cast speed. For the Giga version, aim for 30 quality and level 20 Spellslinger. Socket the +1 level of all skills soul core.
• Helmet (The Vertex): Giga version: +4 with spirit corruption and increased mana cost efficiency. Even a +2 is enough for the Standard and Budget versions. The implicit critical strike chance is important.
• Gloves: Increased effect of socketed items (60%) is the most crucial mod for the Kufalad Soul Core. Without this mod, mana regen drops from 16% to only 10%. Round it out with energy shield and resistances.
• Body Armour: Energy shield, spirit, resistances, and faster start of energy shield recharge. Many sockets for rarity runes in the Temple.
• Ring (Anvarius Gold Ring): For rarity in the Temple (269% rarity total). When not farming the Temple, use a standard ring with cast speed and resistances.
• Amulet: +3 with spirit, energy shield, global defenses, resistances and cast speed. Anoint Infusion of Power to generate power charges.
• Focus (Salient Focus): +2 with increased lightning damage, increased spell damage, energy shield, cast speed and critical strike chance.
• Boots: Energy shield, resistances, and if possible a +5% movement speed corruption.
• Belt (Headhunter): With a good corruption. Use the Wastegate trick: equip the Wastegate belt, place the mana flask, then re-equip Headhunter. The flask remains active (mana recovery per second).
• Charms: Stag and Follow the Silver recommended. A double golden charm for rarity.

Gameplay Tips

• Managing Blink: Blink triggers the dash animation which leaves you Rend vulnerable to stuns. Create a legal macro (quick tap) or attack immediately after Blink to cancel the animation.
• Frost Wall for Temples: In certain rooms (golem and smithy), some mechanics do not activate. Cast Frost Wall on top of them to unblock the situation.
• Directional Mana Storm: Use Morgana’s Tempest as a support so the tempest moves ahead of you. With its 2-second linger, you can advance with the buff active without standing still.
• Import PoB to choose your wands: On the trade site, copy the full item (from name to mods), then paste it into PoB (Ctrl+V in Items). Remove the vendor’s soul cores and add your own (+1 level of all skills) to accurately compare DPS.
• Cold Infusions via Siphoned Elements: Thanks to constant lightning infusions (since you Shock everything), Siphoned Elements converts them into cold infusions with 100% uptime in maps.
• First room in the Temple: Without Headhunter buffs, you have zero resistances. Kill the first pack quickly to gain 40-50 buffs including resistances and max resistances (85% across the board).

How Living Bomb and Remnants Work

The core of the build relies on Living Bomb placed in Cast on Crit. This configuration allows remnants to be generated passively while Spark and Arc handle the offensive work. The links for the Giga version are: Living Bomb + Efficiency + Rachiata’s + Diala’s.

A key point: Living Bomb has a default limit of 1. If you trigger too quickly, the new Living Bomb can overwrite the previous one before it explodes. To solve this, Bigdaddy changed his ascendancy to path toward the node granting +2 limit, allowing 3 Living Bombs to be active simultaneously.

The final piece of the puzzle is Elemental Equilibrium. It is mandatory because Living Bomb does not naturally generate lightning remnants. Elemental Equilibrium converts remnants into lightning to fuel the entire build’s scaling.

Curse Setup and Mana Regeneration

Mana regeneration is provided by the Kufalad Soul Core, socketed in the gloves. This soul core generates mana equal to 10% of the cursed cost while the curse area is active. With increased effect of socketed items at 60% on the gloves, this rate increases to 16%, which is a significant difference.

Spellslinger is entirely dedicated to the curse setup: a curse with Spell Cascade to duplicate the areas, Ritualistic Curse and Whispers of Doom to increase the duration. This separation of Spellslinger (previously shared with the remnant generator) is one of the major changes in this version. The result: up to 3000 mana regen/s at peak, 2000 on average.

Charge Regulation and Crit Scaling

Adding Charge Regulation with power charges is another major change to the build. Thanks to the Infusion of Power anoint on the amulet, power charges are generated automatically. The result is impressive: +29% critical strike chance, bringing Spark from 79% to 100% critical strike chance in combat, and Arc from 50% to 63%.

For budget versions that do not have easy access to Charge Regulation, the Effigy of Cruelty alternative was previously used to obtain Critical Weakness. But since this update, even budget versions use Charge Regulation as it is more efficient and frees the slot for a good focus.

Adorned Jewels and Jewel Setup

The Giga version uses the Adorned at 55% to amplify the mods of rare jewels. Above 25%, the Adorned becomes superior to an additional rare jewel. Bigdaddy invested approximately 3000 divines in crafting to obtain near-perfect jewels (2% off perfect).

In addition, the Prism of Belief Diamond gives +3 to Arc, a significant DPS boost. Corruptions on jewels can provide valuable bonuses such as increased Freeze threshold (46% on the best jewel) which makes the character nearly immune to Freeze.

For less expensive versions, standard rare jewels work very well. The important thing is to maximise crit, spell damage and energy shield mods on each jewel.

The 4 Build Variants

Giga Version (Endgame Mirror Tier): This is the version primarily showcased in the video. Adorned, Vertex +4 with spirit corruption, mirror tier wand, 234 total spirit. Optimised for Temple farming with 269% rarity.

Standard Version: No Adorned, normal rare jewels, Vertex +2 or higher. The wand does not need to be mirror tier. No advanced spirit setup (204 spirit). The passive tree removes meta generation nodes to take more energy shield and ailment/stun threshold, making gameplay in maps much more comfortable.

Budget Version: Replaces Rachiata’s with Energy Retention in Cast on Crit. Adds Frost Bomb for exposure (up to -60% resistances) and Elemental Weakness instead of Despair. The focus only needs +2 with cast speed. Even a focus crafted with an Essence is sufficient.

League Start Version: The bare minimum to start the season. Does not allow consistent farming of juiced content. It is a starting point to progressively upgrade toward higher versions.

Passive Tree