What tier is this for? OU? Or for the Reborn League? If it's for the League, Latios cannot be used.
I like how you use a few mixed sets. Although they come at cost of defensive stats/speed, it can come unexpected.
Your team has a weird combination members. It's not sure whether you are trying to stall (Ferrothorn, Mandibuzz), or go for full offense (Weavile, Aegislash, Charizard).
Also, half of your team has a notable weakness to Fire, and with the Sunny weather provided by Charizard, Fire types are likely going to be a real trouble for your team. I suggest swapping one of your team members for another team member with about the same role, but with a different, fire-resistant typing.
Other than that, your team looks pretty solid. Good luck with your teambuilding.