X-Lax
PillAfterbirth+Unlocked
How do you unlock X-Lax?
Verified starting unlockSource data confirms that no unlock is required.
Creates a pool of slippery brown creep underneath Isaac.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking X-Lax leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13