Had this cool Flare Boost Gengar set on a rain team:
Gengar @ Flame Orb
Ability: Flare Boost (Drifblim)
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shadow Ball
- Thunder
- Weather Ball
- Trick
Maybe outclassed by sheer force Gengars, but still a cool tech on a rain...