Raikou @ Leftovers
EVs: 252 SpA / 4 SpD / 252 Spe
- Calm Mind
- Hidden Power Ice
Great Speed, high Special Attack, and Calm Mind make Raikou a threatening late-game sweeper. Substitute lets Raikou dodge status, waste Z-Moves from slower Pokemon like Poisonium Z Roserade, and PP stall Bronzong's Gryo Ball with Pressure. Thunderbolt and Hidden Power Ice have almost perfect neutral coverage. The only Pokemon that outrun Raikou without a Choice Scarf, Salazzle, Noivern, and Swellow, are all special attackers that can't do much damage to Raikou after a boost or two, making it tough to revenge kill. Because this set struggles with special walls like Cresselia and Ground-types like Steelix, strong Grass- and Water-types are good teammates as they can handle these threats. Additionally, Virizion has STAB Close Combat to threaten Registeel, Roserade and Golisopod can set up Spikes, Mega Blastoise and Tsareena can remove hazards with Rapid Spin, and Shaymin can absorb status with Natural Cure.
Here is a replay of SubCM Raikou sweeping: https://replay.pokemonshowdown.com/gen7ru-851507835