Automanaton
Godly Melee Weapon, 33 gold. Backpack Battles item.
On hit: Use 4 Mana: Inflict 5 Blind for 2s. 45% chance to stun your opponent for 0.5s. Cleanse 4 debuffs. Health drops below 70%: Gain 200 Block, reduce damage taken by 25% for 6s, Star items trigger 30% faster and gain 30% chance to duplicate Mana (once).