For Pumpkin King: Clefairy is likely to die to Roserade since Sludge Bomb kills it pretty quickly, so just do as much damage as you can. If that happens, just swap in Azumarill and Roserade will keep using Giga Drain so you can easily set up Defensive Curls and sweep the rest of the fight. You can just whittle down the Roserade with Aqua Tail or Whirlpool, it will take forever but since she does no damage to you, it's safe. Bisharp dies to 2 Play Roughs.