As with every Mega Evolution Pokmon ex, the tradeoff is on the back end, and your opponent takes three Prize cards when it goes down
There isnt a great deal more to learn in the set, aside from the Resist keyword, which allows a card to absorb damage when Challenged
Ultimately Riley sealed Z-ARC into herself to prevent him from splitting again but ejected Ray from her body so she wouldn't be affected by it, which in turn caused Riley to become a baby
He participates in the war in the form of 'Infinite Knight (Knight de Ilias Tell)', who protects the planetary gear, and his original outfit only appears in events
The type of Pokemon in your deck is irrelevant - you can assign any energy type you want to any of your decks
Plus, players love to draw extra cards which means this utrom robot will get massive