Ulamog Unleashed

Annihilator 2
Trample, provoke (Whenever this creature attacks,
you may have target creature defending player controls
untap and block it if able.)
Whenever Ulamog Unleashed attacks, it gets
+X/+X until end of turn. where X is equal to
the number of creatures defending player
controls that aren't blocking Ulamog
Unleashed.