I'm helping my friend make his set to be the best it can be. This is the last move that he needs. Which would be more reliable?
Foul Play is a bit gimmicky as it uses the target's Attack stat, not your own. Crunch is more reliable. Solid 120 Power (after STAB) and a chance to lower defense is awesome.
Crunch defintly as it makes a reliable revenge killer paired with choice scarf its deadly.
Fould play is nt reliable.