Albedo, Guardian Overseer

Flying, Trample
Promote(Whenever another creature you control leaves the battlefield, if that creature had greater base power than this creature's power, put a +1/+1 counter on this creature.)
When Albedo, Guardian Overseer attacks, Hinder 4(Choose a creature with the greatest toughness from among creatures you don't control, put four -1/-1 counters on it.)