crappy doors OC idea:
Blank
It can randomly spawn in any room.
When you enter a room with Blank in it, your vision goes black white and grey.
Blank itself would be black, doors would be grey, and everything else would be white. Other players would be made invisible. These rooms could not be dark.
Blank would crawl around on the ceiling, looking at the floor. Upon spotting the player, the player's vision would become normal for a moment, and then Blank would jump at the player. Blank could be dodged. If dodged, it would screech and jump back up and be blind for a moment. If the player is hit, the player is instantly killed. The death animation would be Blank tearing into the player's skin.