Why not use a scarfed jirachi like this :
Jirachi @ Choice Scarf
Trait: Serene Grace
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Iron Head
- Fire Punch
- Ice Punch
- trick Most if not all people have entry hazards which means your sash will be broken and useless.With a Choice...