Cain's Eye is an unlockable trinket in The Binding of Isaac.

Grants a 25% chance to gain the effects of The Compass when starting a new floor, for the rest of the floor.

The chance scales with luck, and goes up to 100% with 3 luck.

This page shows information as of the latest Repentance release.
To see latest up-to date information about this trinket for the new Repentance+ (Online Co-op) DLC, check this page instead.

Defeat ??? as Cain.

The following tags are applied to this trinket:

The following special synergies and interactions for Cain's Eye have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the external Isaac Wiki.