Mysterious Paper is an unlockable trinket in The Binding of Isaac.

When taking damage, triggers the effects of one of the following:
• The Polaroid
• The Negative (does not include the damage bonus)
• A Missing Page
• Missing Poster

The item's effects can be used to enter the special paths they open, e.g. The Polaroid to go to the Chest. However, it cannot be used to open the Strange Door in Depths II.

Dropped from Divorce Papers.

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

Defeat ??? as Eden.

The following tags are applied to this trinket:

The following special synergies and interactions for Mysterious Paper have been documented.

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

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Mysterious Paper

• When taking damage, triggers the effect of The Polaroid, The Negative, Missing Poster, or A Missing Page
• Golden Trinket (without Mom's Box): When taking damage, triggers the effect of The Polaroid and The Negative or Missing Poster and A Missing Page
• Mom's Box: When taking damage, triggers the effect of The Polaroid and The Negative or Missing Poster and A Missing Page
• Mom's Box + Golden Trinket: When taking damage, triggers the effect of The Polaroid and The Negative or Missing Poster and A Missing Page

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