killah priest is on 'hell's wind staff' but you just hear him saying "yo jus! yo just" or something like that. I hear rza, gza and masta killa also. unless dreddy is the guy singing in the background he's not on it. there's an interview with the guy who played mr. greco on it. I dont know what dreddy kruger did on any of the songs he was "featured" on.
killah priest was supposed to be on swordsman but was cut off according to someone I know, but I think maybe it says "featuring killah priest" instead of a co-writing credit. that's just a guess tho.