Originally Posted by Meaty
Endure & Reversal + Heracross/Lucario can help you. And a Pokemon with Snow Warning ability. This is to stop Kingdra. For the rest of your team, Swampert, like what Spongebob Number One Fan said, it can help you beat Lantern with that. Swellow with Endeavour would be too slow for Swift Swim Kingdra by the way.
But isn't having Hail while attempting Reversal conflicting?
Anyways, Enure+Endeavor is most likely the worst combination in Pokemon.
Your pretty much guarenteed fainted after that. The ever popular T-Tar just ruins it, and Pokemon faster than you shuts it down.
Swellow running Facade+Guts+Burn is standard, it's more effective.
It's the Competetive Moveset.