Valorous Stance is a uncommon Instant card from Fate Reforged (FRF), collector number 28. Current market price: $0.15 (foil $0.53), TCGplayer market prices via Scryfall.
Choose one — • Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) • Destroy target creature with toughness 4 or greater.