In episode 15, Leo uses this card during his Ground Duel against Greiger while the former was disguised as Luna. When "Trap Reactor・Y FI" attacks "Morphtronic Celfon", Leo activates this card to negate the attack and switch "Celfon" to Defense Position. This activates the effect of "Trap Reactor・Y FI", destroying this card and inflicting 800 damage to Leo.
In episode 47, Leo Sets this card during his Ground Duel against Devack, but did not activate it. He had intended to use this card to protect "Morphtronic Magnen" from Devack's next attack, so that he can summon another "Morphtronic Magnen" on his next turn and form an attack lock. However Devack, during his turn, activates the effect of "Ape Magician" to take control of "Morphtronic Magnen". This card remained set for thenext threeepisodes until the Duel was over.