[1.1.9.0] Grim Dawn Immortal Pets / Vitality Caster Cabalist [SR 75-76 Boss Rooms]
Build uses 3 pets that are immune to damage: Reap Spirit, Bound Wraiths (from Bonescavenger Gloves), and Gate to Many Worlds (off-hand). Since the pets cannot die, you don't have to worry about pet defenses and go for as much Vitality damage for you and your pets as possible.
Grimtools: https://www.grimtools.com/calc/gZwGX3XZ