Lazav, Wearer of Faces [Murders at Karlov Manor Prerelease Promos]

Whenever Lazav, Wearer of Faces attacks, exile target card from a graveyard, then investigate. (Create a Clue token. It's an artifact with "2, Sacrifice this artifact: Draw a card.)

Whenever you sacrifice a Clue, you may have Lazav become a copy of a creature card exiled with it until end of turn.