M-Venusaur + Milotic + Arcanine is a good core to start with. They are bulky offensive pokemon which can also run a support move (Leech Seed/Sleep Powder, Icy Wind and Will-o-Wisp/Snarl, respectively), so if you want something like that for the rest of the team, my idea is to add Aegislash, Scrafty and Zapdos.
Aegislash offers Wide Guard support against Rock Slide, Earthquake, Hyper Voice and Heat Wave (common spread moves), it performs really well against M-Metagross, M-Gardevoir, M-Mawile and M-Salamence which are (sadly) all the threats to your M-Venusaur.
Scrafty offers another Intimidate (both Arcanine and Scrafty have no problems against a +1 Defiant Bisharp, while Zapdos and M-Venusaur can deal with a +2 Competitive Milotic, just in case) and Fake Out support, it deals with M-Kang and it has a great STAB Knock Off and Drain Punch. The Assault Vest variant performs well against M-CharY and rain teams too.
Zapdos offers Tailwind support, it can OHKO Talonflame which is a problem if you run both M-Venusaur and Scrafty, but you also have a double Intimidate so you can easily play around it. Thanks to Hidden Power Ice, Zapdos offers a good match up against M-Salamence. It is also your best answer to M-CharY, that's why you should also run a bulky set to survive Heat Wave in Sun.
If you like the team composition, we can also help you with Moves, Nature and EV Spread. This is just a suggestion.
Aegislash offers Wide Guard support against Rock Slide, Earthquake, Hyper Voice and Heat Wave (common spread moves), it performs really well against M-Metagross, M-Gardevoir, M-Mawile and M-Salamence which are (sadly) all the threats to your M-Venusaur.
Scrafty offers another Intimidate (both Arcanine and Scrafty have no problems against a +1 Defiant Bisharp, while Zapdos and M-Venusaur can deal with a +2 Competitive Milotic, just in case) and Fake Out support, it deals with M-Kang and it has a great STAB Knock Off and Drain Punch. The Assault Vest variant performs well against M-CharY and rain teams too.
Zapdos offers Tailwind support, it can OHKO Talonflame which is a problem if you run both M-Venusaur and Scrafty, but you also have a double Intimidate so you can easily play around it. Thanks to Hidden Power Ice, Zapdos offers a good match up against M-Salamence. It is also your best answer to M-CharY, that's why you should also run a bulky set to survive Heat Wave in Sun.
If you like the team composition, we can also help you with Moves, Nature and EV Spread. This is just a suggestion.
