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Number Magnet

TrinketRepentanceLocked

How do you unlock Number Magnet?

In The Binding of Isaac, Number Magnet is unlocked by earning the Mother completion mark as Tainted Judas.

Structured pathSource-backed requirements are mapped into trackable steps.

Increases the chance of earning a Devil Room by 10%, prevents Krampus from spawning, and generates special Devil Room layouts.

Number Magnet (Achievement)
- Tainted Judas → Mother (normal)
  1. Defeat Hush 3 times to unlock A Secret Exit. source
  2. After A Secret Exit is unlocked, a locked door to Downpour appears after completing Basement/Cellar/Burning Basement I or II. source
  3. Collect Knife Piece 1 in Downpour/Dross II. source
  4. Collect Knife Piece 2 in Mines/Ashpit II. source
  5. After defeating Mom in Mausoleum/Gehenna II, stab the flesh door that appears with the knife familiar to open it. source
  6. Defeat the Mausoleum version of Mom's Heart behind the flesh door, then reach Corpse II and defeat Mother. source
  - Tainted Judas

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What unlocking Number Magnet leads to

Nothing depends on this yet.

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13