Raven of Fell Omens is a common Creature — Bird card from Outlaws of Thunder Junction (OTJ), collector number 101. Current market price: $0.14 (foil $0.25), TCGplayer market prices via Scryfall.
Flying Whenever you commit a crime, each opponent loses 1 life and you gain 1 life. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)