Sceptile @ Leftovers
Ability: Overgrow
EVs: 92 HP / 252 Spd / 164 SAtk
Timid Nature (+Spd, -Atk)
- Leech Seed
- Substitute
- Hidden Power (Ice) / Dragon Pulse
- Leaf Storm
Ye olde SubSeeding Sceptile
Then we have
Sceptile @ Choice Specs / Life Orb
Ability: Overgrow
EVs: 4 HP / 252 Spd / 252 SAtk
Timid Nature (+Spd, -Atk)
- Dragon Pulse
- Leaf Storm
- Hidden Power (Fire)
- Quick Attack
SpecTile. Don't ask about Quick Attack, no better fillers.
Oh, and Sceptile can be used Physically too
Sceptile @ Choice Band / Life Orb
Ability: Overgrow
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Leaf Blade
- Earthquake
- Dragon Claw
- Crunch / X-Scissor
It is possible to run Swords Dance on it, but I don't trust its defenses to pull a risky like that.