World Muncher

Whenever World Muncher attacks, you
may put a card you own outside of the
game into your hand. If you do, you have
six seconds to put it into your mouth,
chew it up, spit it out, and reveal it to
an opponent. That opponent must
attempt to name the chewed-up card.
If they cannot, World Muncher gets
+4/+0 until end of turn.