Mistique, Dreadful Infiltrator

Mystique, Dreadful Infiltrator can't be blocked by creatures that share a creature type with it.

At the beginning of combat on your turn, choose up to one target creature. Until end of turn, Mystique, Dreadful infiltrator is all that creature's types.

Whenever Mystique, Dreadful Infiltrator deals combat damage to a player, exile the first card of that player's library. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spe