Stagemaster's Marionette

When Stagemaster's Marionette enters the
battlefield, exile a card from your hand face-down.
{3},{t}: Target a creature, then reveal a card exiled
by Stagemaster's Marionette. If the target
creature shares either power or toughness with
the revealed card, exchange them. (Exchanging
permanents does not cause enter the battlefield abilities
to trigger and does not induce summoning sickness.)