Zebstrika (M) @ Shell Bell
Trait: Sap Sipper
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Flame Charge
- Wild Charge
- Double Kick
This striped boss is a personal favorite of mine.
substitute protects you from general priority. sap sipper gets you an immunity, and... well, switching into +1 attack is awesome to do. plus, most opponents fear the Overheat.
Well, the substitute is more important. then you can start setting up flame charge. Wild Charge is STAB and won't do too much to you with shell bell.
double kick breaks down subs and things that heavily resist wild charge. ( like ground )