Chunz liu
New York

Posts: 3

In Diablo 4 Season 9, the Spiritborn class has finally ascended into the spotlight with one of the most powerful builds the game has seen to date: the Thorns Spiritborn Poison hybrid. This build is currently obliterating content up to Pit 110+, dishing out billions-and even trillions-of damage with no snapshotting tricks, no gimmicks, and surprisingly Diablo 4 Items, no need for top-tier gear across the board.

At the core of this insane build is a mix of Thorns scaling, Poison over time effects, and rapid-hit mechanics that convert Spiritborn into an unstoppable, boss-melting force of nature. Here's a full breakdown of what makes this build so absurdly powerful-and why it might just be the next thing Blizzard nerfs.

The Core Mechanic: Thorns + Poison = Cataclysm

This build hinges on Razorplate and a set of new Season 9 pants that elevate Thorns scaling into new territory. When combined with fast attack speed and poison conversion, each basic strike applies a deadly poison DoT, which is then consumed by critical strikes and amplified with Noxious Resonance, dealing up to a trillion damage per tick in high-end scenarios.

Even with a low-roll Razorplate, was able to demonstrate 700 billion-1 trillion damage spikes consistently, especially when standing inside the Mystic Circle, which provides bonus Thorns potency and synergizes beautifully with Spiritborn's fast-paced playstyle.

Gear Breakdown: What Makes It Work?

Here's a detailed look at the gear powering this build:

Chest: Razorplate
Essential for Thorns damage.
Even a 1G version can push you to Pit 110+.
Triples in effectiveness with proper Thorns rolls.

Pants: New Spiritborn Thorns-Enabling Leggings
The real MVP of this build.
Each attack procs AoE Thorns hits on nearby enemies.
Scales off attack speed and Poison DoT effectiveness.

Weapons & Accessories
Mystic Circle: Triggers bonus effects like Thorns potency on lucky hits.
Jaguar Main Hall: A key factor in amplifying poison damage through DoT consumption.
Au'quaks & Conceited: Provides heavy multipliers to Thorns damage, especially with barriers.
Doom Gauntlets: Increases Thorns damage and synergizes well with the build's attack speed.
Ring of the Starless Sky: Boosts both attack speed and resource generation.
Catalyst: Equipped on the ultimate, grants even further attack speed and cooldown reduction.

Skill Loadout

The skill bar is laser-focused on quick attacks, massive AoE, and Poison synergy:

Quill Volley: Primary attack skill for consistent Thorns procs.
Toxic Skin: Doubles Thorns damage output-mandatory for boss fights.
Armored Tide & Ravager: Boost toughness and attack output.
Hunter: Massive attack speed increase, crucial for faster Thorns procs.
Vortex: Enemy grouping ability; works well with AoE Thorns explosions.

With these abilities combined, mobs melt within seconds, and bosses like Balile fall before they can even animate their second phase.

Paragon Board Optimization

Paragon board is min-maxed for maximum Thorns effectiveness:

1.Spiny Skin-Core Thorns multiplier board with Vigilant nodes for survivability.
2.Hubris-The best glyph for Thorns stacking. Multiplies your total damage.
3.Convergence-Contains the Revenge node, another Thorns damage amplifier.
4.Viscous Shield-Combines with the Colossal node for boss-killing strength.
5.Ritual-Offers insane double-dipping synergy with Jaguar and poison procs.
6.Sapping or Bitter Medicine (optional)-Poison-enhancing nodes for even higher DoT potential.

Season 9 Features That Boost This Build

The new Seasonal Extracts and Oozes are tailor-made to address this build's former weaknesses:

Reactive Ooze: Solves all resource issues when paired with lucky hit effects.
Celestial Search / Nebulous Extract: Grants survivability and extra crowd control for better mob farming and safety.
Fractured Core: Helps activate vulnerable enemies quickly, leading to more crit-based Poison consumption.

Thanks to these features, you no longer need to worry about managing Spirit or sustaining long fights-the build practically plays itself once it's rolling.Bossing and Pit Runs: Absolutely Dominant

Just a few hits under Hunter's buff and inside Mystic Circle are enough to deal hundreds of billions of damage, sometimes even reaching that elusive 1 trillion mark.

For Pit content, even the densest elite packs are one-shotted effortlessly, as long as they're grouped with Vortex and you're attacking fast enough. He emphasizes staying inside the Mystic Circle to maximize Thorns potency and positioning carefully-especially against ranged enemies or when pushing high-tier Pit levels.

Masterworking and Final Tips

Key masterworking tips include:
Prioritize Thorns rolls on Razorplate and Pants.
Bastion on pants is currently the most effective modifier.
Stack Mystic Circle Potency on amulets and accessories.
Keep resource on lucky hit as a must-have affix to prevent downtime.

The Verdict: The Ultimate Spiritborn Build for Season 9

With billions of damage flying around the screen, mobs vaporizing instantly, and bosses getting one-tapped in Pit 100+, this Thorns Poison Spiritborn build is the most powerful and fun way to play Diablo 4 in Season 9.

Not only is it viable at the highest content levels cheap D4 materials, but it's also relatively easy to gear and optimize-even with just a 1G Razorplate and average pants, the power is immediately noticeable.

Whether you're a softcore speedrunner, a min-maxing Pit pusher, or a Thorns enjoyer from back in the day, this build is for you.