Darth Nihilus, Essence Eater

Lifelink

Darth Nihilus, Essence Eater's power and toughness is equal to 2 plus the half the total amount of life you have gained this game.

Whenever a noncombat source you control deals damage, you gain that much life.

If damage would be dealt to this creature, instead prevent that damage and put that many -1/-1 counters on it.