Bird Cage is an unlockable familiar in The Binding of Isaac, added in the Repentance DLC.

Spawns a familiar on top of Isaac's head that jumps onto the nearest enemy's head once Isaac takes damage, creating a rock wave in a random direction. After this, it will chase enemies around the room, dealing 3 damage per tick (6.43 per second).

The familiar deals 45 damage to the enemy it lands, and 10 damage per rock wave that hits enemies.

Rock waves can destroy obstacles.

If damage is taken in a room without enemies, the familiar will directly go to the flying phase.

Has a 1% chance of being dropped upon defeating The Cage.

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.

Defeat Mother as Eve.

Bird Cage can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Bird Cage have been documented.

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

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.

Bird Cage

• Familiar that activates when Isaac takes damage
• Once active, it targets and performs a slam attack on 1 enemy, then chases and damages enemies for the rest of the room
• Abyss: x1 locust .5x Isaac's damage

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