Tenured Oilcaster is a common Creature — Phyrexian Wizard card from March of the Machine (MOM), collector number 126. Current market price: $0.11 (foil $0.16), TCGplayer market prices via Scryfall.
Menace (This creature can't be blocked except by two or more creatures.) This creature gets +3/+0 as long as an opponent has eight or more cards in their graveyard. Whenever this creature attacks or blocks, each player mills a card.