Blitz of the Thunder-Raptor is a uncommon Instant card from Ikoria: Lair of Behemoths (IKO), collector number 109. Current market price: $0.23 (foil $0.25), TCGplayer market prices via Scryfall.
Blitz of the Thunder-Raptor deals damage to target creature or planeswalker equal to the number of instant and sorcery cards in your graveyard. If that creature or planeswalker would die this turn, exile it instead.