Halo of Flies
ItemRebirthUnlocked
passiveGame ID 10★★★★
How do you unlock Halo of Flies?
Verified starting unlockSource data confirms that no unlock is required.
Spawns two Pretty Flies that block enemy shots and deal contact damage to flies.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Halo of Flies leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13