Glass Cannon

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(except in Rebirth)
This article is about the item. For the challenge, see Glass Cannon (Challenge).

Glass Cannon is an activated item added in The Binding of Isaac: Afterbirth.

Effects

  • Fires a single high-damage piercing tear which can travel over obstacles.
    • The damage dealt by this tear is ten times Isaac's damage, plus a flat 10 damage.
    • The shot has an additional 1.5x size multiplier on top of damage-increased size.
  • (except in Repentance and Repentance+) Sets Isaac's health to half a heart with each use (half a Soul Heart if these are present but there are no Red Heart containers). This also removes any other Soul Heart.pngSoul Hearts or Black Heart.pngBlack Hearts, but not Eternal Heart.pngEternal Hearts.
    • (in Afterbirth †) If Isaac has no Red Hearts and at least one Bone Heart.pngBone Heart, only an empty Bone Heart remains.
  • (in Repentance and Repentance+) Upon taking damage, this item turns into Collectible Broken Glass Cannon icon.pngBroken Glass Cannon, and Isaac will lose an additional 2 hearts of health on top of the damage he already took. Isaac gains 1.5 range and leaves a trail of red creep behind him for the rest of the current room, identical to the effects of Collectible Anemic icon.pngAnemic.
    • If the damage from breaking Glass Cannon would result in death, Isaac will remain at half a heart, gaining half a soul heart if necessary. This does not apply if the damage Isaac took would be lethal before the extra damage is taken.
    • The damage from breaking Glass Cannon does not count as self-damage and will result in losing Angel/Devil Room chance if it is taken to Red Hearts.
    • Self-damage (e.g. from Blood Donation Machine.pngBlood Donation Machines or Sacrifice Rooms) will not break Glass Cannon.

Notes

  • Glass Cannon can be fired diagonally, (except in Rebirth and Afterbirth)even without Collectible Analog Stick icon.pngAnalog Stick.
  • Shooting the Glass Cannon gives a slight knockback effect to Isaac, which can be dangerous in rooms with obstacles like spikes or Fire Places.

Synergies

  • (in Repentance and Repentance+) Collectible The Book of Belial icon.pngThe Book of Belial + Collectible Birthright icon.pngBirthright as Character Judas icon.pngJudas / Character Dark Judas icon.pngDark Judas: Grants Judas +2.67 damage up while Glass Cannon is broken.
  • (in Repentance and Repentance+)Collectible Book of Virtues icon.pngBook of Virtues: Spawns white wisps on the middle ring. The wisps shatter in one hit and their tears deal 8 damage per shot, but if one of the wisps is destroyed, all the others are also destroyed. Does not affect wisps other than ones made by this item. Despite Glass Cannon having a timed charge, the wisps persist between rooms.
  • (except in Repentance and Repentance+) Collectible Chocolate Milk icon.pngChocolate Milk: The current charge of Chocolate Milk affects Glass Cannon.
  • (except in Rebirth and Afterbirth)Collectible Compound Fracture icon.pngCompound Fracture / Collectible Cricket's Body icon.pngCricket's Body / Collectible The Parasite icon.pngThe Parasite: Tears fired by Glass Cannon will split.
  • Collectible Godhead icon.pngGodhead: Creates a giant aura around Glass Cannon tears that almost fills up normal sized rooms.
  • (except in Rebirth and Afterbirth)Collectible Lachryphagy icon.pngLachryphagy: Glass Cannon will fire giant Lachryphagy tears. Tears are harder to feed as they will burst very quickly but they can be fed if you fire tears beforehand and then fire Glass Cannon into those tears.
  • Collectible Multidimensional Baby icon.pngMultidimensional Baby: The Glass Cannon tears will be doubled by Multidimensional Baby.
  • Collectible Mysterious Liquid icon.pngMysterious Liquid: Creates a large pool of creep when tears land.
  • Collectible Tiny Planet icon.pngTiny Planet: Tears produced by Glass Cannon will orbit Isaac.
  • Collectible Lost Contact icon.pngLost Contact: The Glass Cannon tears can block enemy shots.

Interactions

In-game Footage

Trivia

  • Glass Cannon is a term used in video games for a character or entity that deals high amounts of damage but has very low defense.

Bugs

Bug Bug! (except in Repentance and Repentance+) Glass Cannon can be used to steal Devil Room items by using it to set your health to (in Rebirth and Afterbirth) half of a Soul Heart or (except in Rebirth and Afterbirth) no health at all before you die. In the latter case, picking up any item that isn't a health upgrade will kill Isaac.
Bug Bug! (in Repentance and Repentance+) If Character Tainted Forgotten icon.pngTainted Forgotten takes damage with the cannon held above his head, he will be unable to fire and unable to attack. Exiting and continuing will fix this.