Every 15 seconds after the battle starts, revives 1 fallen allied hero, bringing them back into the battle for 60 seconds (summoned units, all start-of-battle, first-engagement, death-triggered, or condition-triggered skills cannot be used). At the same time, restores 20(50)% of their maximum HP. Simultaneously redeems the 2 most injured ally heroes on the field, restoring 200(500)% of magic attack + 12(30)% of the target's max HP, and permanently increasing their max HP by 8(20)%. This effect cannot stack.