I've seen the light, and it has a pineapple on it's head. Phazon is totally right about Ludicolo. An incredible sweeper and summoner all wrapped up in one. Hits wacky hard with Hydro Pump (2HKOing Cryo and junk) and can take hits remarkably well. It has been the most valuable poke on my team in almost every match I've won. I also swapped out my Steel killer Magneton for a Nidoqueen and surprisingly, she loves the rain. It lets her use Thunder over Thunderbolt for huge damage, her Fire Blast still wrecks weakened Ferroseed and Escavalier and she can now stay in against Entei without worrying about getting CB Blitzed.
I've also been trying out a new summoner: Liepard. It has Prankster, access to Encore, Taunt and U-Turn and a higher uninvested speed than both Volbeat and Whimsicott. With max physical bulk, she only takes ~28% from random Uxie U-Turns and she can both punish set-ups and prevent SR and status. Creates some neat mind games, and is a natural suicide Dancer. I've had some success with her so far, anyone else?