Cerberus Pup

Double strike
{b}, {t}: Mature Cerberus Pup, then each player
may return target creature card from his or her graveyard to his or her hand. (To mature Cerberus Pup, exile it. If you do, search your library for a non-Young creature card that shares a creature type with it. You may cast it by paying the difference in mana costs between it and this creature. Then shuffle your library.)