Waterbender Ascension is a rare Enchantment card from Avatar: The Last Airbender (TLA), collector number 310. Current market price: $1.51 (foil $2.25), TCGplayer market prices via Scryfall.
Whenever a creature you control deals combat damage to a player, put a quest counter on this enchantment. Then if it has four or more quest counters on it, draw a card. Waterbend {4}: Target creature can't be blocked this turn. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.)