Eradicator Valkyrie is a mythic Creature — Angel Berserker card from Kaldheim (KHM), collector number 94. Current market price: $2.38 (foil $2.07), TCGplayer market prices via Scryfall.
Flying, lifelink, hexproof from planeswalkers Boast — {1}{B}, Sacrifice a creature: Each opponent sacrifices a creature or planeswalker. (Activate only if this creature attacked this turn and only once each turn.)