A Skyrim xcursor theme. Originally by Bethesda. Windows theme by karlomagno24 at https://www.deviantart.com/karlomagno24/art/Skyrim-Cursor-Set-269380622
To install on Linux: https://wiki.archlinux.org/index.php/Cursor_themes (or just use the PKGBUILD if you're on Arch)
To install on Windows: https://www.howtogeek.com/664962/how-to-change-your-mouse-cursor-theme-on-windows-10/