Victreebel Gen5

Sunny Day Sweeper:

Victreebel @ Life Orb
Ability: Chlorophyll
Happiness: 0
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Sleep Powder / Sunny Day
- Solar Beam
- Sludge Bomb
- Weather Ball

AoA:

Victreebel @ Life Orb
Ability: Chlorophyll
Happiness: 0
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- Hidden Power [Fire]
- Leaf Storm / Giga Drain
- Sludge Bomb
- Leaf Blade / Encore

Lots of places you can change around on this set, but the HP Fire is critical coverage. Without it, Victreebel's GSI list doubles.