This team reminds me why I don't play Dream World. In other words, a very scary team. If you're facing trouble from opposing weather, make Tyranitar Brave or Quiet or Sassy. This gets your sandstorm up first, and get at least one blow in due to the sash. Also, you could then transfer speed into health for extra bulk.
But if the jolly works for you, Godspeed :)
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