Soulweave: Your heals apply Eternal Warrior for 8 sec. If a player dies while Eternal Warrior is active, 20% of your remaining mana is consumed but they are returned to full health.
http://beta.wowhead.com/item=132455/soulweave
This is gonna be so insaaane:P Imagine keeping reptide and healing rain up on melee/tanks and tanks will never die ^^