Cain's Eye is an unlockable trinket.
- When starting a floor, 25% chance to gain the effect of The Compass for the duration of the floor.
- The chance increases based on the Luck stat, and maxes out at 100% at 3 Luck.
- Due to the very low luck requirement, this trinket can easily serve as an alternative to The Compass.
- Glowing Hour Glass: If used to travel back to the previous floor, the effects of Cain's Eye may trigger again when traveling down the second time.
Due to the existence of Cain's Other Eye, this trinket is implied to be Cain's healthy eye.