Ulamog, the Indestructible

When this card enters the battlefield, target
player exiles the top ten cards of his or her deck.
Indestructible, Annihilator 2 (Whenever this
creature attacks, defending player sacrifices two permanents.)
{5}: Ulamog cant be blocked.
{7}: Roll your life counter die. Ulamog gets
+{x}/+{x} until end of turn, where {x} is
what you rolled.