My favorite out of the trio. here's a good set.
Evs: 252atk, 252speed, 4hp
Item: leftovers/life orb
Sacred sword/close combat/ super power: Sacred sword does the least amount of damage out of the three but it ignores stat changes to your target, close combat does a whopping 120 power but lowers your Pokemon's defense and special defense when using it, Super power is similar but instead of lowering special defense it lowers attack.
Iron head: 80 power stab and 30% chance to flinch target
Zen headbutt/ stone edge: Zen headbutt does less damage but has 100% accuracy and 20% chance to flinch(covers fighting and poison) while stone edge has more power and has high crit ratio but has less accuracy (covers fire and flying).
swords dance/iron defense: raise attack by 2 or raise defense by 2.