So the thing is:
Warpriest has Law hax which makes every conventional way of defeating him moot. He mainly uses it defensively, but he can also use it offensively. He can also use Oculus. Everything else gets blocked by Link.
Link has time stop and transmutation, two of his most common haxes, that he can use to try to bypass Warpriest's law manip, under Fi's suggestion, though it'd be incomplete due to not being capable of analyzing the SL. Probably not the transmutation, but it's a possibility. If he gets killed once he resurrects, and Link is far from extraneous of fighting guys who have AP advantage. Master Sword negates his regen.
@Wok Corrections? Obviously there are, this can't be that simple </div>