Mimic, the Deceptive

Whenever a creature you control attacks and isn't blocked, you may exile it. If you do, create a token
that's a copy of that creature, except it's an
Artifact Shapeshifter in addition to its other types.
Whenever Mimic, the Deceptive deals combat
damage to a player, you may choose a creature
exiled with it. If you do, you may cast that card
without paying its mana cost.