Overview
Arc Spellslinger is a Stormweaver take on lightning casting that leans on chain damage instead of single-target precision. Arc is the primary button, jumping between enemies in a pack so a single cast resolves across a whole group, while Spellslinger layers Lightning Conduit on top as automatic secondary pressure. The result is a caster that keeps damage flowing without demanding a long manual skill rotation.
Scaling runs through Archmage. Mana becomes a damage stat, so mana investment on gear and passives feeds directly into spell damage, and the build wants both a large pool and enough regeneration to keep casting through it. Diala’s Desire, Lightning Mastery and Utre’s Augury are the named scaling anchors the creator points to.
Around the core sits a utility package built for damage windows rather than raw defence: Elemental Weakness for a curse floor, Orb of Storms and Mana Tempest for burst, Sigil of Power for stronger casting windows, and Frost Bomb for exposure on tankier targets. Siphon Elements and Convalescence handle sustain and recovery.
Pros & Cons
Pros
- Arc chaining makes pack clear fast and effortless — mapping is where the build feels best
- Spellslinger adds damage without adding buttons, so gameplay stays smooth
- Archmage gives a clear, gear-agnostic scaling axis: more mana, more damage
- Deep utility kit (Elemental Weakness, Orb of Storms, Sigil of Power, Frost Bomb) for hard targets
- Fully ranged — enemies are dealt with before they close
Cons
- Mana sustain is a hard requirement; poor sustain makes the build feel clunky rather than merely weaker
- Cast speed and lightning scaling both need to be online before it feels finished
- Boss damage depends on uptime and positioning rather than a large burst window
- Screen-heavy lightning effects on dense packs
Key Skills
- Arc — main clear skill; chains between enemies for pack damage (Sion’s Temper, Efficiency, Zenith, Rapid Casting)
- Spellslinger + Lightning Conduit — automatic secondary lightning pressure while you keep casting
- Archmage — converts mana investment into spell damage; the build’s main scaling lever
- Elemental Weakness — curse setup with Cursed Ground and Heightened Curse to soften packs and rares
- Orb of Storms / Sigil of Power / Mana Tempest — burst window tools for rares, elites and bosses
Gear & Anointments
Priority stats are lightning damage, spell damage, maximum mana, mana sustain, cast speed, shock effect, elemental damage and cooldown recovery, with defensive layers filled in around them. Mana should be scaled early because Archmage is a large slice of total damage — the creator is explicit that sustain is not optional. Diala’s Desire and Utre’s Augury are named as part of the Archmage package; other specific uniques to be confirmed against the source video.
Endgame Notes
The creator rates scaling 5/5, describing the build as continuing to improve with mana, lightning damage, cast speed, shock support and better gear. Mapping is called out as the standout axis; bossing is solid but depends on maintaining Arc uptime and using damage windows safely.
Credits & Source
Build credited to RNGenius. See the source video for the full build’s gameplay footage + voice commentary: ARC SPELLSLINGER STORMWEAVER BUILD GUIDE | POE 2 PATCH 0.5.