Seems to me like there IS only one viable team to use with Durant. Looks like Truant teams are going to be much more monotonous than trick teams. I've been running pretty much the exact same team as you for my battle subway run (Lost at 892), at 700something on my second try right now. Your set on Whimiscott is probably going to fail you at some point. 1. You can't deal with Volt Switch and U-turn because you don't have Encore and took protect instead. The AI can easily U-turn away from Durant after fainting Whimiscott and serious screw you over with the next pokemon. 2. I think Sunny Day is not worth it over Memento on Whimiscott because any one of the many Flame Charge user will greatly mess up your team. You can't switch out Whimiscott, but you can't leave it in either. If you switch out to Durant, it will get KOed by flame charge. If you switch out to dragonite, you risk a burn, which will be almost a 100% guaranteed loss. If you don't switch out, then you have a +2 speed flame charge user that's faster than Durant and threatens to burn/annoy Dragonite. 3. Don't remove Substitute. It's the only thing that will keep you alive against stuff with Sash/Sturdy Counter/Metal Burst, which is not uncommon. It also means QC things don't instantly kill your dragonite. Since you can already stall out the PP of steel types with Durant and Dragonite, you don't have THAT much trouble with them. 4. I'm not sure why you're running 252spe on dragonite. If your Entrainment works out fine, then you're far faster than anything in the BS, even without any speed evs. I think shifting the speed evs to attack would be better so you can OHKO stuff without risking that they break your sub and leave you vulnerable to the next pokemon.