This Pokemon is monstrous in rain. And with a little boost in attack and speed, it goes a long way.
Kabutops @ Choice Band
Nature: Jolly
Ability: Swift Swim
EVs: 252 Atk / 252 Spe / 4 HP
- Stone Edge
- Liquidation
- Aqua Jet
- Superpower/X-Scissor
This set is for use in rain because of its Swift Swim ability. Stone Edge is for powerful STAB. Liquidation is also for STAB. Aqua Jet is for priority and STAB. Superpower is just for high damage, but X-Scissor is for Grass coverage.
But that's not all, I have another set.
Kabutops @ Focus Sash/Life Orb
Nature: Jolly
Ability: Swift Swim
EVs: 252 Atk / 252 Spe / 4 HP
- Swords Dance
- Stone Edge
- Liquidation
- Superpower/Knock Off/X-Scissor
This set is also best used in rain for a boost in water attacks and Swift Swim. Swords Dance is good as a set up move. Stone Edge is powerful STAB. Liquidation is boosted in rain and is STAB. The last option is up to you, as all three can work well. Superpower is just a filler for power, Knock Off is for getting rid of items, and yet again X-Scissor is for coverage against Grass types.
Pokemon Showdown Damage Calculations:
252 Atk Choice Band Kabutops Superpower vs. 244 HP / 252+ Def Eviolite Chansey: 476-562 (67.8 - 80%) -- guaranteed 2HKO
252 Atk Choice Band Kabutops Liquidation vs. 248 HP / 252+ Def Skarmory in Rain: 163-193 (48.9 - 57.9%) -- 96.9% chance to 2HKO
+2 252 Atk Life Orb Kabutops Liquidation vs. 248 HP / 252+ Def Skarmory in Rain: 282-333 (84.6 - 100%) -- 6.3% chance to OHKO
+2 252 Atk Life Orb Kabutops Liquidation vs. 244 HP / 252+ Def Eviolite Chansey in Rain: 656-773 (93.4 - 110.1%) -- 62.5% chance to OHKO