In game team for me:
Latias
Cosplay Pikachu
Sceptile
Swellow
Linoone
Lombre
Swellow, Linoone, and Lombre are mainly for HM purposes. Don't copy my team though as it is a bad one. I had a tough time with the league as I didn't have a fire type.
In game team for my Alpha Sapphire, I'm getting Omega Ruby for Christmas so at some point I'll post my team from there here :3
Swampert
Latais
Sceptile (Shiny and legit, got it from someone on here. I needed a grass type)
Altaria
Camurupt
Kyogre
Your whole team can mega evolve LOL Did you have a certain mega evolution or just w/e you needed to use in battle