That's a game-ender waiting to happen, especially in decks like G'raha Tia, Scion Reborn, Isshin, Two Heavens As One, Baylen, the Haymaker, or any go-wide Commander shell looking for a top-end swing spell in disguise
And that energy card
The game is also encumbered by the confusing complexity thats come to dominate so many free-to-play games these days
(2) If this card is Normal or Special Summoned: You can destroy 1 FIRE Beast, Beast-Warrior, or Winged Beast monster in your hand, Deck, or face-up field, except Sacred Fire King Garunix, and if you do, this card gains ATK equal to half the ATK the monster destroyed had, until the end of this turn
The Black common instant three cost digs your domain, and then draw two, the rest head to your graveyard, you lose two life