Pyro, Flaming Monster

Shapeshifter, Ward {2}
Whenever you cast an instant spell, Pyro spychecks X, where X is the CMC of the spell cast.
(When you spycheck, reveal cards from the top of an opponents library until you reveal a creature with mana value X. Then, you may pay X to cast it. If not, exile the spell. Shuffle the remaining cards into their owner's library).

Whenever you cast a sorcery spell, Pyro gains trample until end of turn.