Mysterious Paper

Mysterious Paper is an unlockable trinket.

Effects[]

On every frame, it has a random chance to grant the effect of one of the following items/trinkets:
- The Polaroid
- The Negative
  - Does not include +1 damage bonus.
- A Missing Page
- Missing Poster
If Isaac does not already have the item/trinket, then he will be given the item (but only for that particular frame). This means that Isaac has a chance to go to Chest or the Dark Room without The Polaroid or The Negative, he has a chance to revive as The Lost upon death, and so forth.

In addition to regular trinket drop sources, Mysterious Paper is guaranteed to drop from Divorce Papers, provided it has been unlocked.
If the Missing Poster effect is activated, Mysterious Paper will not be removed.
- If it happens to grant Missing Poster, it can be used to unlock The Lost, and will act as an extra life for both the Lost and the Tainted Lost. It effectively functions like a Broken Ankh, but with a slightly higher chance to activate on each death (1/4 vs. 2/9) and less of a cushion after revival (Holy Mantle vs. 3 Soul Hearts).

With this trinket, the average damage you do to all enemies when hurt is 0.5 / 1, or 10.5 / 11 if you meet the conditions for The Negative to trigger. Luck will slightly improve this, by increasing the chance for A Missing Page to work.
This trinket cannot be used to substitute The Polaroid or The Negative to open the strange door.
The Black Heart damage bonus of A Missing Page will work, provided a heart/item affected by it will trigger on the frame it's active.