• In episode 61, Shark sets this card during his Duel against Yuma Tsukumo. In the next episode, Yuma activates "Rivals Unite" to take control of "Chaos Number 32: Shark Drake Veiss" after he uses the effect of "Number 39: Utopia" to negate the attack "Utopia" made against "Shark Drake Veiss". While this removes Shark from Vetrix's control and restores Shark's memories, it also causes "Shark Drake Veiss" to inflict great pain on Yuma due to the Emperor's Key unable to protect Yuma from the power of "Shark Drake Veiss". Vetrix tells Shark to use his set "Heraldry Catastrophe", which will destroy both "Shark Drake Veiss" and "Utopia" and inflict their combined ATK to Yuma as damage to save his friend, however Shark was hesitant on winning since that would also mean Yuma and Astral would lose all the "Numbers" they had obtained (and Astral would be destroyed as well). At the same time, Yuma had the idea of using the effect of "Traplin" to destroy "Rivals Unite" and return "Shark Drake Veiss" to Shark's side to prevent the power of "Shark Drake Veiss" from hurting him despite that would mean Vetrix would be able to control Shark again. In the end, Shark activates this card (after remembering he set this card on his first turn) to banish "Shark Drake Veiss" and take 1000 damage as a drawback, thus winning Yuma the Duel.