So i thot of a new idea for gen 7 again so im pretty sure all gen 7 legends have a pokemon specific z move so i was think for the battles when the legends have 10hp left they use their specific z move and the Mc gets access to z moves for protect flash and double team
Viewing post in The Legendary Pokemon Breeder - ABANDONED comments
There are a couple like Silvally and Zeraora that don't have a signature Z-Move, but they can use normal ones and it may add a little favor. Maybe for Necrozma or something it could use Light-That-Burns-The-Sky and it would work like Archie when you catch Manaphy; got a dodge properly or get one-shot.