Cross Dungeon Rooms

Procedural rooms cannot be shared between dungeons. A room whitelist may only contain rooms defined in the same dungeon: a whitelist entry stores a bare room name and is always resolved against the dungeon that owns it.

Room names used in Mythic Mobs conditions, mechanics and targeters are resolved against the procedural dungeon instance the caster or target is currently inside, by matching the room's name exactly, ignoring capitalization.

There is no dungeon:room syntax. When you name a room in the editor, any character outside a-z and 0-9 is rejected, so a name you can type can never contain a colon or an underscore.