How to find Mozo Shenno shrine: Mozo Shenno is located in northern Hyrule, in the Hebra Tower region. It is hidden in a cliffside cave on the easternmost point of the Biron Snowshelf. There is a wide, snow-covered canyon below it, and the entrance to the cave is on the cliff to the left as you're headed north through that canyon. (Browse the gallery below for the precise location.)
How to defeat the Guardian Scout IV
Wear the strongest armor to this battle that you can, and bring guardian weapons with high damage output. Begin by drinking an elixir that improves your attack power, then move in close and strike your opponent with Flurry Rush attacks when possible. After it attacks a few times with its armaments, the guardian will typically use a whirling attack, so get out of the way and then move in quickly to land a few more strikes. Elemental arrows also work nicely when you need to attack from a distance. When the guardian collapses and a laser tracks your movement, the guardian is almost dead and you have a limited amount of time to hack it to pieces before it starts doing serious damage that is difficult to sustain.
Your prize when you win is a diamond and a spirit orb, as well as the usual assortment of guardian parts.