Nesting Doll is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Blowing up one of the following beggars has an 80% chance to replace them with another one from the list:
Beggar
Devil Beggar
Key Master
Battery Bum
Rotten Beggar
Zodiac Beggar

Replacement beggars appear 20% smaller.

The following special synergies and interactions for Nesting Doll have been documented.

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

• Check out the trinket description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.