>>20427005Cloyster is actually one of the most dangerous threats in the tier if you give it even a single turn to set up since priority isn't a thing down there.
Just as a bit of advice, Tangrowth, Hitmontop, and Cogagrigus are kind of shit in UU. I would suggest Mega Blastoise over Hitmontop for a spinner or Mienshao for a fighting type. Tangrowth is fairly bulky, but it gets destroyed by the physical Fire types that rule the tier, and nothing on your team really stops them. Limit yourself to one Grass type per team at most, none would be even better but Roserade is pretty decent. Wisp/Hex is also kind of shit as a tactic, since Fire types are so huge and there are a ridonkulous amount of clerics to choose from. Ghost is also a terrible type to be in UU since Hydreigon loves to spam Dark Pulse.
At a glance you're weak to almost every popular sweeper in the tier.