Egg Penny is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Grants a chance to spawn a Fragile Bobby familiar (see Bag of Bobbies) when picking up a coin.

The chance for the effect to trigger is based on the coin's value, using the formula 1 - 0.83 ^ CoinValue, which is equal to 16.67% for a regular Penny.

Egg Penny can be found in the following item pools:

The following special synergies and interactions for Egg Penny 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.