Discard an Energy card attached to Rocket's Mewtwo ex, and then switch all damage counters on Rocket's Mewtwo ex with those on the Defending Pokémon. (If an effect of this attack is prevented, this attack does nothing.)
Flip a coin. If heads, the Defending Pokémon is now Asleep.
If this card were to follow the normal TCG type rules, it would be a card. This card seems to be partially based on Rocket's Mewtwo from Gym Challenge, featuring similar Hypnoblast and Psyburn attacks, and a Darkness Switch attack that functions almost identically to that card's Juxtapose attack (aside from not requiring a coin flip like that one did).