Beastmaster Ascension is a rare Enchantment card from New Capenna Commander (NCC), collector number 283. Current market price: $6.87, TCGplayer market prices via Scryfall.
Whenever a creature you control attacks, you may put a quest counter on this enchantment. As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.