Focus Punch from Feraligator really threw me for a loop. A few pieces of advice might be..
1] You should have kept swords dancing with Feraligator since my Lanturn couldn't touch you.
2] You should have Baton Passed to your Octillary after the first nasty plot when you had the sub up, instead of going for the 2nd nasty plot.
3] You shouldn't use Assurance or whatever on Shuckle, I think it's a little hopeless to try to make him fast.
4] Sometimes you have to use things as death fodder to get a "free-switch" into something else, switching into Drapion really cost you big.
5] Take into account Stealth Rock damage when you switch out
I mean all that advise with the best intentions I'm not ragging on you anything, that was a great battle, I had a lot of fun.