Accepting the ultra ball from puma, and buying two of my own great balls! I'mma be going with him to Crush Quarry in search of a mega stone (and possibly an aggron and some fossils), and I'll be taking:

Warren [M] Delphox @ Blaze
Freya [F] Garchomp @ Sand Veil
Falconzord [M] Pidgeot @ Keen Eye (tutored Aeroblast)