In episode 148, this card is shown in Z-one's explanation when he notes to Yusei Fudo that he figured out that Yusei is planning to wait and let the Timelords return to Z-one's Deck until Z-one doesn't have a Timelord monster in his hand, which would allow Yusei to attack Z-one directly with his Synchro Monsters.
In episode 149, Z-one uses this card during his Turbo Duel against Yusei. He Special Summons this card, "Zaphion, the Timelord", and "Sadion, the Timelord" from his hand via the effect of "Endless Emptiness". After "Zaphion" and "Sadion" had attacked, Z-one uses this card to attack "Red Dragon Archfiend". Due to this card's first two effects, it is not destroyed and Z-one takes no Battle Damage. After damage calculation, this card's third effect activates, returning Yusei's monsters to his Deck (they go to the Extra Deck when this occurs since the returned monsters are Synchro Monsters) and inflicting 1500 damage to Yusei (500 for each monster returned this way). On Z-one's next Standby Phase, this card, "Zaphion", and "Sadion" return to Z-one's Deck due to their last effects.