I've always had luck with rain in Wi-Fi battles, so I decided to construct one on showdown. I felt like I should come here for some advice or changes before battling with it.
Egg Noodle (Eelektross) @ Damp Rock
Ability: Levitate
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Rain Dance
- Toxic
- Thunder Wave
- Wild Charge
Goodra @ Assault Vest
Ability: Hydration
Shiny: Yes
EVs: 248 HP / 8 Atk / 252 SpA
Modest Nature
IVs: 0 Atk
- Dragon Pulse
- Muddy Water
- Thunder
- Fire Blast
Anne (Lapras) (F) @ Leftovers
Ability: Hydration
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Ice Beam
- Thunder
- Hydro Pump
- Sing
Slowbro @ Leftovers
Ability: Regenerator
Shiny: Yes
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
IVs: 0 Atk
- Scald
- Fire Blast
- Ice Beam
- Slack Off
Gyarados-Mega @ Gyaradosite
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Crunch
- Dragon Dance
- Waterfall
- Dragon Tail
Dragonite @ White Herb
Ability: Multiscale
EVs: 196 HP / 252 SpA / 60 SpD
Modest Nature
IVs: 0 Atk
- Draco Meteor
- Sleep Talk
- Thunder
- Rest