- can be found in the Nightmare of Mensis, in the Micolash, Host of the Nightmare boss fight area. In the area for the second part of the boss fight Micolash will eventually run into a large room with several enemies. He will sprint into a mirror at the end of the room and teleport away. The key is next to the mirror he jumps into.
Used to open a door in the boss arena with Micolash, Host of the Nightmare. The door is located in the wall to the left of the Hunter upon entering the area where you fight Micolash.
- Can be acquired during, or after the fight with Micolash.
- The Key as an "Eye" on its handle. Similar to the Insight symbol that players have on their HUD. However it makes sense that it does have that symbol, seeing as where it actually leads players to.