(2) Set: Simulacrums no longer take damage, gains all runes, and its cooldown is refreshed when you die. (4) Set: While you have a Simulacrum, damage is reduced by 50%. Damage you take is split with your Simulacrums as well. (6) Set: Bone Spear cast by you and your Simulacrums deals 9000% increased damage. Simulacrums gain triple this bonus.
Account Bound
Initial designs of this mask showed that it was to be held from the hand with a stick.