Sakashima's Protege is a rare Creature — Shapeshifter card from Commander Legends (CMR), collector number 90. Current market price: $0.44 (foil $1.89), TCGplayer market prices via Scryfall.
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.