So I based this team around the core of Fini-tini. Max Def/Max HP Fini (cause you can CM your SPD/SPA), standard set.
Victini I chose to be an all around attacker. I set the speed so that it outruns Zygardes trying to speed creep Zygardes trying to outrun Kokos at +1 and says fuck you with a Glaciate. I always like Bolt Strike, as Araquanids aren't exactly prepared for Physical electric attacks, and Fini can only set up its SpD. Also, its a LO HP.
I then chose Scrafty as my pretty much obligatory Intimidate user over Lando-T and Mence. Having 2 Fake out is really nice, as other people are unprepared for it. I put Poison Jab over Ice Punch, as I already had enough ways to deal with Lando-T/Zygarde/Mence (Fini-tini+Kang, sorta), and it's a way to punish Leles that try to swap in on a fake out, as well as do Super Effective damage to all the Finis unlike Iron Head.
Ok, so far, 3 pokemon with very slow types, and nothing I can throw into Fairies or mence. Therefore, I placed TR rachi into this slot. The Speed IV is set to outspeed +1 Zygardes under TW, while being as slow as possible for TR.
I slapped on Kang as my Mega. I chose Low Kick over D-Edge as a way to better deal with opposing Kangs and Heatrans, and everything else I just S-toss. Plus, the lack of recoil gives Kang a slightly better longevity.
I placed Zapdos as my 6th pokemon to make my team a TailRoom team. The Speed is such that it just underspeeds Victini. Heat Wave is there as a spread move, and I preferred it over HP Ice on this team.