Unfinished Rain Team pls help

Rotom-Wash
Ability: Levitate
IVs: 0 Atk

Dracovish @ Choice Scarf
Ability: Strong Jaw
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Fishious Rend
- Crunch
- Psychic Fangs
- Low Kick

Ditto @ Choice Scarf
Ability: Imposter
EVs: 252 HP / 8 Atk / 240 Def
Impish Nature
IVs: 0 Atk
- Transform

Pelipper @ Damp Rock
Ability: Drizzle
- Hurricane
- Scald
- U-turn
- Knock Off

Ferrothorn
Ability: Iron Barbs

Toxapex
Ability: Merciless