Ascendant Packleader is a rare Creature — Wolf card from Innistrad: Crimson Vow Promos (PVOW), collector number 186p. Current market price: $1.05 (foil $2.82), TCGplayer market prices via Scryfall.
This creature enters with a +1/+1 counter on it if you control a permanent with mana value 4 or greater. Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature.