Instant As an additional cost to cast Mask of the Mimic, sacrifice a creature. Search your library for a card with the same name as target nontoken creature and put that card onto the battlefield. Then shuffle your library.1
10/4/2004: You look for a card of the same name, the current type of the card does not matter.
10/4/2004: You do not have to find a card if you do not want to.
10/4/2004: If a copy card is targeted by this effect, you get to look for another copy of the card it is copying. This is because a copy card actually takes on the name and initial characteristics of what it copies.