Whirlpool Warrior is a rare Creature — Merfolk Warrior card from Apocalypse (APC), collector number 36. Current market price: $2.31 (foil $27.35), TCGplayer market prices via Scryfall.
When this creature enters, shuffle the cards from your hand into your library, then draw that many cards. {R}, Sacrifice this creature: Each player shuffles the cards from their hand into their library, then draws that many cards.