Well, Stall was in Gen IV, so those tags are incorrect. Anyways...
It can only really be used to make Payback go last. And considering you have a base speed of 50, that would have happened anyways. Plus, Sableye has pathetic Attack, so you'd be better off using Foul Play. I guess it can also be used to make Substitute go last, which can guarantee a Focus Punch. But Sableye never was bulky and to make such a thing work would be difficult. Just always use Prankster, it is a better ability. So much better, that a Stall set is not even a viable set. Not in any way.
This Set Sucks (Sableye) (M) @ Leftovers
EVs: 248 HP / 252 Atk / 8 Def
Adamant Nature (+Atk, -SAtk)
- Focus Punch