Escavalier (M) @ Leftovers
Trait: Swarm
EVs: 230 HP / 252 Atk / 8 Def / 20 Spd
Adamant Nature (+Atk, -SAtk)
- Swords Dance
- Megahorn
- Iron Head
- Return
This is my own personal set that I came up with. The attacks are standard but the EV's are what I really changed. Yes they look slopy but they are like that for a reason. The HP EV's are there so that it can take a quite a few hits before being KO'd; the attack EV's are there for thee obvious reason of maxing out it's attack so that it can OHKO most of the metagame after on SD; the 8 defence make it just bulky enough to take one or two fire type attacks from an average or relatively strong physical attacker; and the speed is there so that it can outspeed some of those slow bulky attackers.
I know that there are more effective sets but I found this one the most effective for my style of battling. Edit it as much as you want to fit your playing style, but if you like powerful Pokemon that aren't too slow and can take a hit or two then this is the best set for you.