Shadow-Rite Priest is a rare Creature — Human Cleric card from Dominaria United (DMU), collector number 106. Current market price: $0.40 (foil $0.24), TCGplayer market prices via Scryfall.
Other Clerics you control get +1/+1. {3}{B}{B}, {T}, Sacrifice another Cleric: Search your library for a black creature card, put it onto the battlefield, then shuffle.