Priest of Forgotten Gods is a rare Creature — Human Cleric card from Ravnica Allegiance Promos (PRNA), collector number 83p. Current market price: $3.27 (foil $4.35), TCGplayer market prices via Scryfall.
{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature of their choice. You add {B}{B} and draw a card. (Activate only as an instant.)