Mom's Key

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Mom's Key is a passive item.

Effects

  • Gives Isaac two Key.pngKeys.
  • If a non- Red Chest.pngRed Chest spawns hearts, coins, Bomb.pngBombs and/or Key.pngKeys, causes the chest to spawn a second group of said pickups, effectively doubling the average pickup yield.
  • (except in Rebirth) This item belongs to the Yes Mother?Yes Mother? set. Collecting three items from this set will transform Isaac into his mother.

Notes

  • Mom's Key cannot change the contents of a chest; it will only cause it to spawn extra pickups.
  • All other chest rewards (such as pills, cards, items, etc.) will not cause the chest to spawn additional pickups.
  • (in Repentance and Repentance+) Does not affect Old Chest.pngOld Chests.

Synergies

  • (in Repentance and Repentance+)Collectible Sharp Key icon.pngSharp Key: Doubles the amount of pickups dropped by enemies.

Interactions

  • Collectible Mom's Key icon.pngMom's Key: Does not further increase the amount of pickups spawned when multiple copies of the item are acquired.

In-game Footage

Trivia

  • Mom's Key is the first item, by ID number, that was not carried over from Wrath of the Lamb.
  • The appearance of Mom's Key is a reference to Bowser's boss key in Super Mario 64 as well as the Boss Key in various Legend of Zelda games.
  • (except in Repentance and Repentance+) Prior to Repentance, this item's description was "Less is now more +2 keys".