Head to Weynon Priori and find Jauffre, give him the amulet. You'll get some new information. Now your mission will be to find the Emperor's lost son, supposedly stationing in Kvatch. If you ask Jauffre for assistance, he'll give you access to a chest filled with some goodies. Go around the priory and ask everyone the same, you'll get some additional stuff. The most important gift is a horse from Prior Maborel.