Here's a UU team w/ mega pidgeot
https://pokepast.es/03f3c84aaf11a6a5 fightinium z togekiss helps break things like mega aggron, mega steelix, empoleon, etc. and it can also hit rock types for solid damage. Scarf Krook hits things like zera, mane, and aero that also beat pidgeot. Terrak can help break blissey, the oven, and just generally kill things