Sakashima's Protege is a rare Creature — Shapeshifter card from Magic Online Promos (PRM), collector number 86038.
Flash Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) You may have this creature enter as a copy of any permanent that entered this turn.