Neck-breaking Doll is a trinket in Damnation, a mod for The Binding of Isaac.

-1 × TrinketMultiplier broken heart upon using any active item with it fully charged.

If the active item is not fully charged, Isaac can hold on ACTIVE button to trigger its effect, adding broken hearts based on the number of missing charges.

The sprite of this trinket was from Nameless Doll (Identity V Cryptic Notes).

• Download Damnation from the Steam Workshop.