Add it to your server
In your server's .ini file (servertest.ini by default), add these to the existing WorkshopItems= and Mods= lines, separated by a semicolon (;).
WorkshopItems=3826430751
Mods=OldSchoolMagicCards
| Workshop item | Subscribers | Declared in |
|---|---|---|
| Old School Magic Cards3826430751 | 72 | description footer |