Structure Utility Control has a custom "Gloom" potion effect that can be configured for structures. It causes darkness which is not blinding or harsh and occasional spooky noise. In "Server Only Mod", Warden Darkness is used instead of Gloom.
You can configure how long a structure is immune to damage after being discovered. You configure how long the structure will weaken players after being discovered. Works for almost any normal or modded minecraft structure! It does not stop Create!
Structures can have several positive and negative effects which can be configured for power from 1 to 9 by structure. They do not cause particles in current versions.
Gloom can be configured to cause shadows during the day! It isn't blinding... just dark and spooky.
The effects given by the structure last just a few seconds. This can't be changed.
