Torchlight: Infinite SS13 Iris 2 Corrosive Spirit Build Guide

To run the Season 13 Iris 2 Corrosive Spirit build in Torchlight: Infinite, import the in-game build code +3kOYIOfEfGmNwAAAAAAlw== and focus your investment on minion skill levels, Nourishment uptime, and physical-to-erosion damage conversion.

This setup resolves the common early Timemark 8 summoner plateau by swapping elemental summons for the Corrosive Spirit Magus, which bypasses monster elemental barrier mechanics and scales heavily through erosion penetration and Wilt stacks.

Core Skill Setups and Support Links

Your primary damage source comes from your Magus's automated ground slams and projectile barrages. Secondary slots focus entirely on passive automation so you can concentrate on positioning and dodging hazards.

Main Summon Setup

• Active Skill: Summon Spirit Magus (selecting Corrosive Spirit)
• Primary Supports: Nourishment, Minion Damage, Added Erosion Damage, Critical Strike Rating, and Elemental/Erosion Penetration.
• Alternate Links: If minion critical strike chance is capped through your talent trees and Hero Traits, replace Critical Strike Rating with Projectile Penetration or Concentrated Attack for higher single-target damage against zone bosses.

Utility and Trigger Setups

Automating curse application and survivability keeps buffs active without interrupting movement:

• Curse Application: Corrosive Fog linked to Automatic Curse Support or Spell Activation on Minion Hit to continuously shred enemy erosion resistance.
• Mobility: Spiral Strike or Blink linked with Quick Mobility to navigate arena mechanics.
• Survivability: Compound Potion configured with auto-recovery triggers, supplemented by Protection Field or Defiance to guard against burst damage.

Iris 2 Hero Trait Milestones

Iris 2 scales directly with Nourishment efficiency and uptime. Prioritize trait selections that maintain the Magus's enhanced state during extended encounters.

Talent Tree Progression

Path your talent points across three primary boards to balance summon lethality with personal survival:

1. God of Machines: Take nodes providing Minion Damage, Minion Attack Speed, and Summon Skill Level. Select keystones that grant minion critical strike rating and extra minion scaling linked to minion maximum life.
2. Machinist: Allocate points into Minion Erosion Conversion and Projectile Speed. Take the keystone that grants bonus minion movement speed when Nourishment is consumed so your summons do not lag behind your hero.
3. Shadow Master (or Spirit Cluster): Invest in Erosion Penetration, Sealed Mana reduction, and cooldown recovery for minion skill casts. If your hero takes heavy damage in deep maps, shift minor travel nodes into Maximum Life and Barrier retention.

Gear Stat Priorities and Budgeting

Because hero spell damage does not transfer to your Corrosive Magus, all offensive gear affixes must explicitly specify minion attributes.

• Weapons (Dual Scepters or Wands): Prioritize +Level to Minion Skills, +Level to Spirit Magus Skills, and Minion Critical Strike Multiplier. Hitting skill level 25 and higher provides large increases to base minion damage.
• Chest Armor: Choose high Armor or Energy Shield bases crafted with Additional Damage for Minions and reduced Sealed Mana percentage.
• Amulet: Equip a crafted medallion featuring +1 to All Minion Skill Levels and Minion Attack and Cast Speed.
• Rings: Target minion attack speed, resistance penetration, and hero defenses such as maximum life and elemental resistances.

For early progression on a budget, use intermediate magic or rare gear rolled with flat minion skill levels before crafting expensive multi-affix weapons.

Aura Reservation and Combat Playstyle

Reserve your mana using Sealed Mana support gems to run three simultaneous auras:

• Offensive Auras: Erosion Amplification and Swiftness to maximize minion damage and clear cadence.
• Defensive Aura: Stoneskin or Tenacity to stabilize incoming physical and elemental hits.

In combat, use your movement skill to navigate around monster packs while the Corrosive Spirit acquires targets. Iris 2 automatically sustains minion health, so manual re-summoning is rarely needed outside map transitions. Against map bosses, stay positioned behind your Corrosive Magus so the summon absorbs front-facing aggression while your automated curses maintain steady resistance shredding.