Torchlight: Infinite Iris 2 Thunder Magus Starter Build

To start a new league with Iris 2 using Thunder Magus in Torchlight: Infinite, scale your minion skill gem levels and cast frequency while letting the Lightning Spirit Magus auto-target enemies from range. This setup eliminates early weapon dependency during the campaign, allowing you to focus your gear strictly on survivability and movement speed until you reach the Netherrealm.

Core Mechanics and Playstyle

Summon Thunder Magus deploys an autonomous ranged caster that chains lightning across monster packs. Because minion base damage scales with skill gem levels rather than weapon attack values, your personal weapon stats do not dictate your early damage.

In combat, keep moving through the zone while your Magus clears packs behind and ahead of you:

• Positioning: Keep your summoned Magus positioned between Iris and high-threat enemies or map Watchers to absorb incoming projectiles and hold aggro.
• Minion Durability: Minions can die to concentrated area-of-effect bursts from bosses. Invest in minion elemental resistances and maximum life on talent nodes to prevent repeated resummoning.
• Directing Focus: Use your active skills and character positioning to draw minion targeting toward elite mobs and campaign bosses.

Skill Setup and Support Links

Allocate your skill energy to prioritize your primary damage links first, followed by mobility, recovery, and passive auras.

Primary Damage Skill

• Active: Summon Thunder Magus
• Support 1: Minion Damage (amplifies overall summon damage)
• Support 2: Rapid Return or Quick Mobility (accelerates cast and execution speed)
• Support 3: Added Lightning Damage (provides flat lightning damage that scales with gem rank)
• Support 4: Elemental Fusion (boosts elemental shock application and lightning penetration)

Utility, Mobility, and Recovery

• Mobility: Link Blink with Quick Mobility to clear terrain obstacles and dodge boss slam attacks.
• Recovery: Slot Compound Potion linked with Emergency Restoration for instant health recovery when taking burst damage.

Passive Reservation Skills

• Offense: Run Electrocution or Thunder Core to provide your summons with bonus lightning penetration.
• Defense: Add Elemental Resistance or Steadfast once your reserved mana pool and gear energy permit secondary auras.

Talent Tree Progression

Begin in the God of Machines tree to establish baseline minion survivability and damage, then branch into the Machinist tree to boost critical strike scaling against bosses.

Avoid allocating talent points into personal spell damage or weapon scaling nodes. Every offensive point should directly modify minion statistics.

Early Gearing and Stat Priorities

Treat your early equipment as stat sticks for skill levels, resistances, and character mobility:

1. Weapons: Equip two one-handed wands or a staff rolling +1 to Minion Skill Levels or +1 to Lightning Spell Skill Levels. Flat gem levels provide substantially larger damage increases than percentage-based elemental damage increases.
2. Boots: Prioritize movement speed rolls above all other stats to reduce campaign travel time.
3. Armor (Chest, Helmet, Gloves): Prioritize open crafting slots to bench-craft flat Life and Lightning Resistance. Aim for at least 60% elemental resistances before challenging the Chapter 5 boss.
4. Jewelry: Fill missing elemental resistances and mana regeneration to support continuous skill activation.

Netherrealm Transition Steps

When moving from the campaign into Netherrealm Timemark 1 through Timemark 6, adjust your gear and positioning for higher monster density:

1. Expand Energy Capacity: Spend early Flame Sand to unlock enough gear Energy for four support links on your primary summon skill.
2. Clear from the Perimeter: Deploy the Magus ahead into dense packs and allow chain lightning to clear the area before running forward.
3. Control Watcher Encounters: In Netherrealm Watcher fights, stay behind the boss while your summon holds position in front. This directs major boss abilities away from Iris.
4. Preserve High-Value Currency: Do not spend Flame Elementium crafting mid-tier leveling gear. Save your high-tier currency until you acquire a six-link chest armor and rings with minion critical strike multipliers for higher Timemark progression.