Horadric Spells and Diablo 4 Items 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 aggro management while you devastate with Thorns. Varanya adds even more offensive value via Bloodthirst.

Gear Guide and Masterworking Picks

Priority Unique buy Diablo IV Items:

Sepazontec - Applies Thorns to Rock Splitter hits. Core piece.
Razorplate - Maximize Thorns scaling.
Loyalty's Mantle - Enhances your Double Jaguar power.

Legendary Aspects

Before You Get Xan Rune:

Juggernaut's
Might
Plains Power
Hectic
Moonrise
Ghostwalker
Conceited
Duelist's

After You Get Xan Rune:

Moonrise
Hectic
Duelist's
Adaptability
Conceited
Plains Power

Why Xan matters:

With Xan Rune, Rock Splitter can Crit and Overpower, boosting your Thorns to absurd levels. Combine this with Moni Rune for damage spikes.

Paragon Board Route and Glyphs

Glyph Level: 46+

Paragon Route:

1. Starting Board - Hubris Glyph (core Thorns damage glyph)
2. Spiney Skin - Revenge Glyph (adds scaling) - 1 rotation
3. Viscous Shield - Turf Glyph (defensive bonuses) - 1 rotation
4. Sapping - Ritual Glyph (damage increase vs CC'd enemies) - 2 rotations
5. Convergence - Colossal Glyph (raw size/area stats) - 3 rotations

These boards optimize Thorns, Barrier, and area damage while giving plenty of survivability for late Nightmare Dungeon scaling.

Final Tips and Verdict

Don't worry about Toxic Skin being on your bar-it's there for passive Thorns gain only.
Always maintain uptime on Ravager and The Hunter while using Rock Splitter as your spam button.
This build abuses a potentially unintended double-dip mechanic with cheap D4 materials Jaguar Spirit-use it while you can, but expect possible nerfs in a future patch.