Is Roaring Moon likely for Pokémon Champions, the video game?

I think so, but it would be tricky if it were using the attacks that gain power with discarded ancient cards or the Ex's attack that hits itself with 200 damage. In my humble opinion it would need an ancient deck with fast hitting high health dark types to soak up hits while the attacks are charging or its being healed. Everytime I've faced one it either took the active slot too soon and wasnt able to deliver, the EX knocked itself out, and when my opponent had a deck built for discarding ancient cards I won because they ran out of cards too quickly. Not to say I know what I am talking about, but it feels like using mega Lucario ex with a deck geared towards pulling things out of discard and some emergency cards for putting things back in the deck is a solid counter against the Roaring Moo's I faced.

Im pretty sure every pokemon will be available

Oops sorry