Fox in a Tube is a passive item in Reverie, a mod for The Binding of Isaac.

Gives advice and assistance in certain situations. Sometimes she spawns glass bottles in the center of rooms, providing certain pickups or objects. These bottles will break if attacked.

If Isaac takes her advice, misfortune befalls upon him...

• Upon entering a treasure room without a restock machine, a bottle will spawn with a restock machine within. If Isaac accepts it, adds 3 instances of The Poop to the item pool.
• Upon entering a sacrifice room, a bottle will spawn with 3 black hearts. If Isaac accepts it, spawns Isaac (Boss).
• Upon entering a shop and Isaac's has less than 30¢, a bottle will spawn with 30¢ within. If Isaac accepts, Super Greed(s) will spawn in the next shop. Ultra Greed will spawn within the Blue Womb's shop.
• Upon clearing a room adjacent to a challenge room, the challenge room's door will open. If Isaac enters, 5 + CurrentStage Golden Troll Bombs will spawn within.
• Upon entering a devil deal, a bottle will spawn that makes all items in the room free. If Isaac accepts, phase 3 Satan will spawn at the start of the next floor.
• Upon entering an angel room with 2 or more items, a bottle will spawn that allows all items to be taken. If Isaac accepts, 2 Isaac (Bosses) will spawn at the start of the next floor.
• Upon entering a secret room, a bottle will spawn with a random item from the Secret Room item pool within. If Isaac accepts, 3 items in the future will become glitched items.

Bosses spawned by her have lower HP that is based on the current floor.

Fox in a Tube can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Fox in a Tube have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the item description on the mod's external Wiki.
• Download Reverie from the Steam Workshop.