No. 2
ItemAfterbirthUnlocked
passiveGame ID 378★★★★
How do you unlock No. 2?
Verified starting unlockSource data confirms that no unlock is required.
Continuously firing tears for 2.35 seconds causes Isaac to drop a Butt Bombs bomb, which damages and confuses all enemies in the room when it explodes.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking No. 2 leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13