It's time to post about the Octopus that used to be a fish, Octillery!
Octillery @ Life Orb
Ability: Suction Cups
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature / Quiet Nature (if on a Trick Room team)
- Scald
- Fire Blast
- Energy Ball
- Ice Beam
Scald is for STAB and for burning the opponent's Pokemon, Fire Blast is for coverage on Grass, Ice, Steel, and Bug, Energy Ball for coverage on other Water-types, and Ice Beam for coverage on Grass, Ground, and Dragon. Octillery does have access to Mud Shot which could be used for Electric-types but I wouldn't recommend it because Mud Shot is a very weak move.
Also, here's a set for a sniper variant
Octillery @ Scope Lens
Ability: Sniper
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature / Quiet Nature (Trick Room)
- Hydro Pump / Water Spout
- Fire Blast / Blizzard / Energy Ball
- Substitute / Energy Ball
- Focus Energy
This set is all about maximum damage. Hydro Pump is STAB, or you could go with Water Spout for even more damage + in Trick Room this guy is always going first. Blizzard is coverage on Grass, Ground, and Dragon,Fire Blast for coverage on Grass, Steel, Ice, and Bug, or Energy Ball for Coverage on Rock, Ground, and Water (Keep in mind that if you choose Blizzard or Fire Blast you will be completely walled by bulky Water-types.)Substitute is for setting up, and Focus Energy for the boosted critical-hit chance which is good because the Sniper ability boost critical-hit damage.
See ya!