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=3829719024
Mods=MTGSLCards
| Workshop item | Subscribers | Declared in |
|---|---|---|
| MTG Secret Lair Cards (B42)3829719024 | 13 | description footer |