- Nightmare of Mensis:
- Inflicted Organ x1, right before the Upper Bridge with the three Winter Lanterns
- Found in Chalice Dungeons.
- Can be dropped by all variants of Labyrinth Warrior.
- In NG+, can be bought from the Insight Bath Messengers with 2 Insight.
- Used to create Rotted Offerings for depth 2/4 Root Chalices.