Ash, Party Crasher is a uncommon Legendary Creature — Human Peasant card from Wilds of Eldraine (WOE), collector number 201. Current market price: $0.17 (foil $0.27), TCGplayer market prices via Scryfall.
Haste Celebration — Whenever Ash attacks, if two or more nonland permanents entered the battlefield under your control this turn, put a +1/+1 counter on Ash.