The Void Interdimensional Prison

Hello inmates, welcome to your new permanent home. You were brought here because you were deemed to be too dangerous on your home dimension for whatever reason.
If you’re thinking about trying to escape, think again! Not only do we have our anti-magic field as well as cream of the crop guards, but we also are in an alternate dimension. There is only one portal out of here which is heavily guarded 24/7. Even if you manage to get to the portal, it leads to a barren desert where you will die a slow and painful death.
Also you may notice the golden collar around your neck. This little baby will deliver a painful shock if you ever leave this dimension or if any of the guards catch you misbehaving. These things can’t be broken unless you have the master key which is possessed by me.
So enjoy your stay here, it will be a long one.
Sincerely, Warden Crimson