This sword is actually based on a mixup of two others from the games Gothic and Gothic 2. These two are Uriziel and Beliar's Claw, both powerful weapons and now connected to be a one deadly blade.
This design was made in Fusion360 except the skull which I had to create in Blender since it's much better for the organic stuff. I've also attached it with OBJ and FBX files but you know how the mesh looks like when it's imported from CAD based software xD
It's not yet ready for 3D printing, but I'll try to slice it in the near future to check for the best printing option and how many parts it will have. When it'll be done I'll update this post.