Glass Cannon

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Removed in Afterbirth †Item icon
Added in Afterbirth †Item icon
Item altar
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4 seconds 4 seconds
Treasure Room Treasure Room
Greed mode only Treasure Room Treasure Room
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(page 3, column 7, row 6)
Added in Afterbirth
Disambig.png 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[edit | edit source]

  • 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.
  • 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 or Black Hearts, but not Eternal Hearts.
    • If Isaac has no Red Hearts and at least one Bone Heart, only an empty Bone Heart remains.

Notes[edit | edit source]

  • The item recharges actively after use, similar to items like The Boomerang The Boomerang, allowing repeated usage within the same room.
  • Shooting the Glass Cannon gives a slight knockback effect to Isaac, which can be dangerous in rooms with obstacles like spikes or Fire Places.
  • The Lost can use this item safely, as it will not affect his Health.

Synergies[edit | edit source]

  • Chocolate Milk Chocolate Milk: The current charge of Chocolate Milk affects Glass Cannon.
  • Added in Afterbirth †Compound Fracture Compound Fracture/Cricket's Body Cricket's Body/The Parasite The Parasite: Tears fired by Glass Cannon will split.
  • Godhead Godhead: Creates a giant aura around Glass Cannon tears that almost fills up normal sized rooms.
  • Added in Afterbirth †Lachryphagy Lachryphagy: 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.
  • Mysterious Liquid Mysterious Liquid: Creates a large pool of creep when tears land.
  • Tiny Planet Tiny Planet: Tears produced by Glass Cannon will orbit Isaac.

Interactions[edit | edit source]

  • 9 Volt 9 Volt: No effect.
    • Added in Afterbirth †: Reduces charge time to 2 seconds.
  • 20/20 20/20/The Inner Eye The Inner Eye/Mutant Spider Mutant Spider: Only fires one tear.
  • Anti-Gravity Anti-Gravity: Tears produced by Glass Cannon do not have the Anti-Gravity effect.
  • Brimstone Brimstone: Glass Cannon fires a normal tear.
  • Car Battery Car Battery: No effect.
  • Dr. Fetus Dr. Fetus: Glass Cannon fires a normal tear.
  • Epic Fetus Epic Fetus: Glass Cannon fires a normal tear.
  • Holy Mantle Holy Mantle: Doesn't prevent damage done by Glass Cannon but will protect against other types of damage.
  • Ipecac Ipecac: As the Glass Cannon tears are so large, even a modest damage increase or a single tear size increasing item is likely to render the tear unable to damage enemies, their explosions too far from them.
  • The Ludovico Technique The Ludovico Technique: Glass Cannon fires a normal non-controllable tear.
  • Marked Marked: Has no effect on Glass Cannon.
  • Mom's Knife Mom's Knife: Glass Cannon fires a normal tear.
  • Monstro's Lung Monstro's Lung: Glass Cannon only fires a single tear.
  • Soy Milk Soy Milk: Reduces damage of shots, no effect on charge time.
  • Technology Technology: Glass Cannon fires a normal tear.
  • Tech X Tech X: Glass Cannon fires a normal tear.
  • Added in Afterbirth †Trisagion Trisagion: Fires normal Trisagion beams that do not have increased damage.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • 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.
  • Originally, Glass Cannon would only reduce Red Hearts, so if Isaac had a large number of Soul/Black Hearts, the item would essentially be free damage. The item would later be patched to also remove other types of health as well, making it a lot more situational.

Seeds[edit | edit source]

 PC  9BJ3 WWHL (First floor Treasure Room, north of spawn)

 Switch  Greedier mode only JAWB DBJ6 (First Golden Treasure Room)

 PS4  MAYW FFY4 (First Treasure Room, west of spawn)

Bugs[edit | edit source]

Bug Bug! Glass Cannon can be used to steal Devil Room items by using it to set your health to Removed in Afterbirth † half of a Soul Heart or Added in 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.

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