Apparently Offensive RD Wrath wasn't taken.
Poliwrath @ Life Orb
Ability: Swift Swim
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Liquidation
- Close Combat
- Darkest Lariat / Ice Punch / Substitute
- Rain Dance
Very self-explanatory; coverage will miss Whimsicott or Jellicent one way or another, so ensure that you can chip those, and frankly, it doesn't beat Jelli that well even with Darkest Lariat. The only advantage Wrath has over Kingler is being able to take a +0 Energy Ball easily (even has a roll to live a +2 one if rocks aren't up), so use it on teams that really need that secondary Ninetales check. This also loses to Ninjask, like, really hard. You can run Sub to fix that, but then you're missing even more coverage.
252+ Atk Life Orb Poliwrath Liquidation vs. 252 HP / 156+ Def Mudsdale in Rain: 374-445 (92.5 - 110.1%) -- 56.3% chance to OHKO