Transplant Theorist is a uncommon Artifact Creature — Phyrexian Artificer card from Phyrexia: All Will Be One (ONE), collector number 73. Current market price: $0.28 (foil $0.30), TCGplayer market prices via Scryfall.
Whenever this creature or another artifact you control enters, you may draw a card. If you do, discard a card. {2}: Put target card from your graveyard on the bottom of your library.