Okay, looking for someone to poke holes in my team before it's locked in, natures, EVs movesets and even replacement pokemon are all fair game as I can breed everything I need very quickly,
Mega Altaria; Adamant, 4HP/252 Att/252 Spe; DD, EQ, Return, Roost
Mega Aggron; Adamant, 252 HP/240 SpDef/16 Att; Thunder Punch, Ice Punch, EQ, Iron Head
Magnezone@Choice Scarf; Timid, 4HP/252 SpAtt/252 Spe; Volt Switch, Thunderbolt, HP Fire, Flash Cannon
Donphan@Leftovers; Adamant, 126 HP/252 Att/126 Spe; Head Smash, Ice Shard, Play Rough, EQ
Azumarill@Assault Vest; Adamant, 240 HP/252 Att/16 Def
Mega Pinsir; Jolly, 4HP/252 Att/252 Spe; Swords Dance, X-Scissor, Quick Attack, Superpower
Other options I'm considering are Scarfed Moxie Salamence, LO Manectric, Sash Technician Breloom and Unaware Clefable.