Volc - Buginium Z standard-ish set.
MegaSciz - EVs are kinda weird but I swear they are there for something. Helps against Koko. You can live one Specs T-bolt and after a SD, you have a chance of KOing.
Magearna - EVd so you can take one hit from Lando and KO it with Ice Beam, you can take one EQ from Mega Pert and KO it with E-ball and even take one hit from +1 Volcarona.
MegaSciz - EVs are kinda weird but I swear they are there for something. Helps against Koko. You can live one Specs T-bolt and after a SD, you have a chance of KOing.
Magearna - EVd so you can take one hit from Lando and KO it with Ice Beam, you can take one EQ from Mega Pert and KO it with E-ball and even take one hit from +1 Volcarona.