I like this idea for doubles.
Beedrill (Focus Sash, Swarm)
Air Cutter
Endeavor
Toxic Spikes
Protect
Togetic (Evolite, Serene Grace)
Tailwind
Follow Me
???
Morning Sun
Turn 1: Beedrill takes a hit and goes down to 1 HP thanks to Sash, and uses Toxic Spikes.
Togetic uses Tailwind.
Turn 2 and on: Beedrill kills everything with Endeavor and Air Cutter while Togetic takes hits with Follow Me. Poison from Toxic Spikes will kill things after an Endeavor.
So pretty much Beedrill can wreck havoc as long as Togetic is alive.