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
While the players decks are tournament legal, the Ursula deck that you play against is made up of exclusive cards with altered backs, meaning you cant use them in competitive play
Jenny, Generated Anomaly Jenny, Generated Anomaly from Doctor Who has the combination of dealing combat damage and exploring, all that while having double strike
Impulse works similarly
(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 game is also encumbered by the confusing complexity thats come to dominate so many free-to-play games these days