Indoctrination Attendant is a common Creature — Phyrexian Cleric card from Phyrexia: All Will Be One (ONE), collector number 16. Current market price: $0.23 (foil $0.19), TCGplayer market prices via Scryfall.
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When this creature enters, you may return another permanent you control to its owner's hand. If you do, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block."