Glass Cannon is an active item in The Binding of Isaac, added in the Afterbirth DLC.

On useFires a single high-damage piercing and spectral tear, and knocks back Isaac a bit.

The damage dealt by the tear is equal to (10 * Isaac's damage) + 10.

While heldUpon taking damage, the item transforms into the Broken Glass Cannon, and damages Isaac for an additional 2 full hearts.

When this happens, Isaac gains +1.5 range and leaves a trail of red creep for the rest of the current room.

The damage dealt by Glass Cannon cannot kill Isaac, but will leave him on half a red heart.

The Cannon won't break from self-sacrifice mechanics such as the Blood Donation Machine.

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.

Glass Cannon can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Glass Cannon 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.

Glass Cannon

• Launches 1 large, high-damage spectral tear
• Taking damage while holding this item breaks it, dealing 2 full hearts of damage to Isaac and granting the Anemic effect for the current room
• Fully recharging the Broken Glass Cannon restores it to its usable state
• Abyss: x1 critical locust .75x Isaac's damage
• Book of Virtues: x1 middle wisp - .5 hp - 8 damage
• Book of Virtues: All Glass Cannon wisps die when 1 is killed

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