Grass Knot and Agility on Empoleon to fill the last two moves.
Salamence @ Choice Scarf
Trait: Intimidate
Lonely/Hasty Nature
- Fire Blast/Flamethrower
- Earthquake
- Stone Edge
- Draco Meteor/Dragon Pulse/Hydro Pump. Looks kinda novelty. but the Natures don't lower Sp.Def at least. Cause' he's already weak enough to Ice. Hydro Pump if you want to counter Rock Types, or the two Dragon Moves provided to counter Dragon Types. Earthslide combo is pretty obvious if I remember correctly, that's what Stone Edge and Earthquake is. Fire Blast or Flamethrower to counter Ice Types. Choice Scarf to get the speed boost to outspeed things that would otherwise, OHKO him. Intimidate to lower Attack on all pokes, it's a useful ability for those Physical Sweepers who have Stone Edge. Hasty Nature is what I thought could work well because Scarfchomp has usually a Hasty, or Naive Nature. Lonely Nature if you prefer the Attack boost instead of Speed.