Chaugnar Faugn has Indestructible and Lifelink.
Emerge – Pay half your life, rounded down. (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
Whenever another creature dies, you may put X +1/+1 counters on Chaugnar Faugn, the Feeder, where X is that creature's power.
Whenever a player loses life, that player loses twice that much life and you gain that much life.