Magic The Gathering - Avatar - The Last Airbender Eternal - Beastmaster Ascension (Borderless Source Material Card) - 0039

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.

Beastmaster Ascension is a Mythic, Enchantment card from the Magic The Gathering set Avatar: The Last Airbender Eternal (MTGSC-TLE-0039)