Crystal Nature Greatsword Low-poly 3D model is available on CGTrader for $5. Original author: Forge-Studio. Specs: 1463 polys, 936 verts.
STL (Stereolithography, filesize: 324 KB), OBJ (OBJ, filesize: 181 KB), 3DS (3D Studio, filesize: 36.6 KB), FBX (Autodesk FBX, filesize: 165 KB)