Black Powder
ItemAfterbirthUnlocked
passiveGame ID 420★★★★
How do you unlock Black Powder?
Verified starting unlockSource data confirms that no unlock is required.
Isaac leaves a trail of black powder on the floor. Walking in a circle will spawn a pentagram symbol on the floor, which deals 10 damage per tick to any enemies inside it. [Repentance+] Grants larger explosions and fireplaces will explode when extinguished.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Black Powder leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13