I built this team with Nido-Rus a few months ago and it's been pretty consistently solid. Built around Mega Garde + Infernape, which does really well since Infernape handles the Steel-types that trouble Garde and also has Feint to break through Wide Guard. Rotom-W takes care of Lando-T, provides Wisp to help Garde's low Def, and something to outrun and beat Mega Diancie as well. Zapdos gives TW support for Garde and beats Water-types for Infernape. Talon provides priority and a wincon of sorts with SD, also giving the team another option to take care of Lando-T since a +1 Brave Bird will OHKO it. Sub Aegis was added to help against TR and provide a Kang switchin. Sub Weakness Policy is a really cool set that bluffs Wide Guard while also getting boosts from Kang Sucker Punch, which will barely do any damage on the second hit after breaking the sub.
Spreads / sets should all be fairly straightforward, but I'll run through them real quick. Nape has enough Atk to OHKO 56 HP Tran, which was slightly more common when this was made. Garde is Max SpA with enough HP/SpD to live Aegis Shadow Ball and the rest in Spe, allowing it to outrun Hoopa-U. HP Ground because you can never have enough Heatran answers, and this spread isn't fast enough to take advantage of Encore. Washtom outruns Deo-A, max SpA, rest in HP. Zapdos is Kyle's spread, OHKO's scarf Lando-T and Keldeo, lives 2 Lando-T Rock Slides, faster than base 70s, rest in SpD. Talon is Sharp Beak > LO to better take advantage of potential boosts. Aegis has 84 Spe to outrun Thund in TW, as a +2 Shadow Ball will OHKO fast sets.
