Sneak Attack is a mythic Enchantment card from Wilds of Eldraine: Enchanting Tales (WOT), collector number 79. Current market price: $13.37 (foil $31.71), TCGplayer market prices via Scryfall.
{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.