>>18687303As said above, Jirachi and Scizor outclass it for the most part.
And honestly, the WP Agility set is not good. Sure, you get to +2 +2 in a turn, but you get revenge killed the next turn by anything with priority, you're not close to powerful enough to OHKO most things with actual bulk, and it's really unreliable since it's really hard to set WP up, as you can't use full HP because you need speed investment to outspeed fast threats at +2, and that makes you lose some useful bulk.
On top of that, you're coverage is not that good, and if something resists your STAB and isn't weak to your coverage it will probably beat you.
Maybe you could make it work with some support, such as screens and shit. There are much better late game sweepers anyways, there's little reason to use it.