Black Feather
TrinketAfterbirthLocked
How do you unlock Black Feather?
In The Binding of Isaac, Black Feather is unlocked by earning the Ultra Greed completion mark as Eve (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Increases Isaac's Damage for each 'evil' item or trinket he possesses.
What unlocking Black Feather leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13