This reminds me of the Golisopod attack, only better. It allows the utility option to determine an attacker in the active. No wasted resource and efficient. I definitely want to see an Ex card. Possible single prize attacker in future meta decks.
Nice that these are mostly competitive cards. I would play these over the cards from the sets. These have the stamp to show you play the game. I would collect a playset of these. Energies too.