Dusk Elf Mage

When Dusk Elf Mage enters the battlefield, search your library for a creature card with power 2 or less, reveal it, put it into your hand, then shuffle your library. Persist (When this creature is put into a graveyard from play, if it had no -1/-1 counters on it, return it to play under its owner’s control with a -1/-1 counter on it.)