V15 rings in gu yan or something. It's the main mob of tras as in traseia. It's in the middle. So when u enter ull have to fly up the hill.
And Chief from Elliun drops It as well. It's near the 150s or something. You'll have to fly towards the riight of the map.
Skeleton weps: ankou in ankou's asylum. The entrance is in Elluin and right top of map. The entrance is a flower? Like pattern on the floor.
125 sets: Kheldor in catacombs. Open map and click valley of risen there should be a place saying catacombs in top left corner.
Hope tht helps