I don't have time for a full rate now, but I can see a few things immediately. That T-tar doesn't really seem viable, Politoed still outspeeds and Focus Blast OHKOs if it hits, while Hydro Pump comes close. It might still OHKO, I haven't been in that situation in a while and I haven't run a calc for it. I'd go for a more standard set.
The Heatran.... Scarf + Roar? If there ever was a bad combiation, it's that.... Roar has negative priority for starters, so you're still going last most of the time. Second, even when something weak to Fire, Ground or Ice comes out you will not be able to do anything bar Roar it out.
Also, on a Sand team everyone expects Sand Force Landorus, at least in my experience. Special variants are typically only used on Weatherless and non-Sand teams. People'll see your T-Tar and that Lando loses the element of surprise it had.
Last edited by loco1234; 11th January 2013 at 6:13 PM.
"Whether Castform the Weather Pokemon can weather the weather is dependent on whether the weather that it's weathering is the proper weather for it to weather. Whether the opponent can weather the weather is also subject to whether the weather that it's weathering is the right weather to weather. Whether Castform can weather the opponent is once again dictated by the weather and whether that weather is the favorable weather for weathering. But most importantly, you should know whether there will be weather to weather rather than what weather they will be weathering and whether they can weather that weather."
- Smogon's Castform analysis