At a glance i see nothing that makes this guide special, all you did was post an item order, you did not explain why or what your suppose to be doing. Please update and put more descriptions into your guides

I don't think Riven can be considered an off-tank because she has the lowest base defense of most champions, and her abilities are conducive to getting in, and getting out of a fight.

I think this is the better offtank-build of Riven.