Summon a Spirit Guardian to aid you in battle.
Whenever this vessel hits a target with a basic attack or your Spirit Shred damages an enemy, it receives 1 stack of Fortitude, up to a maximum of 15 stacks.
Fortitude: +2% mitigation per stack for 10 seconds. Direct damage received removes 1 stack.
Death of this vessel while in combat incurs a 60 second cooldown to this ability.