Soulless Ancestor

Hexproof, Deathtouch, Menace, Soulless Ancestor can't be blocked by creatures with power 4 or less
If Soulless Ancestor becomes the target of a spell while tapped or attacking exile it.
if Soulless Ancestor is enchanted it cannot attack or block.
Whenever a player gains life Soulless Ancestor gets -X/-X until end of turn where X is the amount of life gained.