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Diablo 4 Season 9: Rock Splitter Thorns Spiritborn Build Guide

If you're looking to dominate Diablo 4 Season 9's endgame with Diablo 4 Items almost absurd power, the Rock Splitter Thorns Spiritborn build is your go-to choice. Built around stat double-dipping and a broken synergy with Jaguar Spirit, this build takes advantage of Thorns damage in a way that shreds anything in your path. Thanks to a few glitchy mechanics, it's one of the most overtuned setups in the game-and yes, it might get nerfed, but while it's live, it's time to capitalize.

This guide will walk you through everything you need to know to play and Diablo 4 Items gear your Thorns Spiritborn for max efficiency.

Horadric Spells and Jewels

Ideal Spell Combo:

Catalyst: Disintegrate

Infusion: Nebulous Extract

Arcana:

Invigorating Helix (healing)

Bottled Wind (Barrier gen)

Sapping Crux (apply Vulnerable)

Why this works:

Disintegrate becomes a poison beam thanks to Nebulous Extract, which triggers Thorns passively via Replenishing Toxic Skin. This combos beautifully with your passive poison effects.

Ideal Jewels:

Seal of Denial - Boosts Thorns damage.

Scornful Light - Increases your output at the cost of taking more damage (not a huge issue with this build's Barrier generation).

Best Mercenary Picks

Main Mercenary: Raheir

Secondary: Varanya (Bloodthirst + Combat Skill)

Raheir Talents:

Ground Slam

Raheir's Aegis

Bastion

Inspiration

Raheir brings tankiness and cheap Diablo IV Items aggro management while you devastate with Thorns. Varanya adds even more offensive value via Bloodthirst.