OKAY - I GRINDED - I FINALLY DID IT - I CAPTURED SHADOW MEWTWO!!
I’m just now discovering Pokken pokemon - I didn’t even know that existed until I took one of my silly number of heart scales to the move-relearner and discovered ‘Dark Nova’. I have read the Wiki but I’m trying to figure out the best way to utilise this … and make a team to beat the Elite 4 without losing a Pokemon so I can get the rest of the “pokken” Pokemon!!