Luna is a passive item in The Binding of Isaac, added in the Repentance DLC.

Adds an extra Secret Room and Super Secret Room on each floor. Does not apply to the floor the item was picked up on.

Reveals one random Secret Room on the map on pickup, and at the start of each floor.

Secret Rooms will contain a shining beam of light that causes the following when entered:
• +1 Half Soul Heart.
• +1 fire rate for the first beam entered; +0.5 for all subsequent ones. Stat changes only apply for the current floor.
• Creates a strong shine around Isaac that is increased for every beam of light entered. It can be used to light up dark areas or fight the Curse of Darkness!.

Beams of light don't appear in Ultra Secret Rooms.

No additional Secret Rooms are added in Greed Mode, Blue Womb, the Ascent, and Home.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

Luna can be found in the following item pools:

The following tags are applied to this item:

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Luna

• Adds 1 additional secret room and 1 additional super secret room to each floor
• Adds a beam of light in secret and super secret rooms. Walking into the light grants 1/2 soul heart and a tears up for the rest of the floor
• Displays the location of 1 secret room on the map
• Abyss: x1 locust 1.5x Isaac's damage

• Check out the item description on the external Isaac Wiki.