The theme is no longer listed or supported on SMF.
sharing it would be a violation of the licence so I doubt people would.
Nothing appears? how weird is not uploaded in the themes part I always find them ... well if you know which design is nothing that a little time and some knowledge impede to achieve it!
Regards!
I am using it on another forum and really like it.
Found this link and tried loading the file...opens with errors.
https://www.template4all.com/free-smf-themes/5135-free-magazine-style-smf-theme-template.html
Attached the downloaded copy...I'm sure the original name was simply "Balanced" and not "mag_balanced"
If you're using it on another forum, you should be able to copy it to a second forum.