Palkia, Dragon of Space

Flying
Spacial Rend - Damage dealt by Palkia, Dragon of
Space can't be prevented. Whenever Palkia,
Dragon of Space deals damage to a player, exile
that many cards from the top of your library. As
long as those cards remain exiled, you may cast
them and spend many as through it were mana of
any color to cast them.
Creatures attacking you get -2/-0.