Binding of Isaac: Rebirth Wiki

Monstro's Lung is a passive item.

Effects[ | ]

  • Grants a charged shot that fires 14 tears in the same fashion as Boss Monstro ingameMonstro.
    • The attack can be released only when fully charged.
    • Each tear deals 100% Isaac's Damage.
    • Each tear has a random size multiplier between 0.9x to 1.33x, but there is no effect on damage.
  • Tears down: (except in Repentance)Tear Delay × 4.3 / (in Repentance) Fire Rate ÷ 4.3 (roughly 0.23x).

Notes[ | ]

  • Charge time can be found with the following equation:
  • Each tear has independant chance to have Tear Effects.
  • Tear falling speed ups will slightly reduce the effective range of Monstro's Lung.
    • (in Repentance) Since range ups always add to tear falling speed, every range up reduces effective range.
  • (in Repentance) Multi-shot effects such as Collectible 20 20 icon20/20 or Character Keeper iconKeeper adds 2.4 tears to the barrage per tear they normally grant. The resulting amount is rounded, and is capped at 50.

Synergies[ | ]

  • Collectible 20 20 icon20/20 / Collectible The Inner Eye iconThe Inner Eye / Collectible Mutant Spider iconMutant Spider:
    • (except in Repentance) Adds 2, 5 or 7 tears to the barrage respectively. For the latter two, greatly slows down the charge.
      • 20/20 + The Inner Eye + The Inner Eye: 10 extra tears.
      • 20/20 + Mutant Spider: 14 extra tears.
      • The Inner Eye + Mutant Spider: 14 extra tears.
      • All three: 19 extra tears.
    • (in Repentance) Adds multi-shot effect they normally grant (see Notes section).
      • Without any other multi-shot effect, the barrage size becomes 16/19/21 respectively.
  • (in Repentance)Collectible Almond Milk iconAlmond Milk / (in Repentance)Collectible Soy Milk iconSoy Milk: Fires automatically upon reaching full charge.
  • Collectible Anti-Gravity iconAnti-Gravity: Hover effect is overidden, but tear delay down still applies, which greatly reduces the charge time.
  • Collectible Blood Clot iconBlood Clot: All tears are larger, with increased damage (as opposed to every 2nd tear like Blood Clot alone).
    • (in Afterbirth † and Repentance) Tears have a 50% chance to be Blood Clot tears.
  • (except in Rebirth)Collectible Brimstone iconBrimstone: Brimstone has priority. Does not apply Monstro's Lung's tears down. Fires 3-5 additional beams in random directions around Isaac. This effect also applies to Character Azazel iconAzazel and (in Repentance) Character Tainted Azazel iconTainted Azazel's versions of Brimstone.
    • Brimstone + (in Repentance)Collectible Eye Sore iconEye Sore: Overrides this synergy with a chance to shoot 1-3 additional beams in random directions.
  • (except in Repentance)Collectible Chocolate Milk iconChocolate Milk: Reduces Isaac's tear delay by 20%, and each tear from Monstro's Lung is a charged Chocolate Milk shot, massively increasing fire rate and damage.
    • This does not apply to Character Lilith iconLilith's Incubus; picking up Chocolate Milk will significantly reduce damage and increase charge time.
    • (in Repentance) The tear damage and the barrage size scale with charge amount. At 50% charge, the tear damage is 100%, the barrage size reaches 100% and is capped there. At 100% charge, the tear damage is 200%.
        • This makes damage per second drop to 80%.
  • (in Repentance)Collectible Eye Sore iconEye Sore: Adds a chance to fire 1-3 additional barrages in random directions.
  • (in Afterbirth and Afterbirth †)Collectible Dr. Fetus iconDr. Fetus: Monstro's Lung has priority. Does not apply Dr. Fetus' tears down. Fires 6 bombs which detonate simultaneously.
    • (in Repentance) Monstro's Lung has priority. Does not apply Dr. Fetus' tears down. Fires 6 mini-bombs which detonate at different times.
    • Multi-shot effects add 1 bomb to the barrage, up to 21 bombs.
  • (except in Rebirth)Collectible Epic Fetus iconEpic Fetus: Epic Fetus has priority. Does not apply Monstro's Lung's tears down. 2-4 extra cursors rotate around the main cursor before the missiles land.
  • (in Afterbirth † and Repentance)Collectible Flat Stone iconFlat Stone: All tears bounce simultaneously; the effective range is greatly increased.
  • (in Afterbirth † and Repentance)Collectible Haemolacria iconHaemolacria: Monstro's Lung has priority. Applies +43 Tear Delay after Haemolacria tears down, instead of Monstro's Lung tears down. The barrage size is reduced to 4/7 (roughly 0.57), tears of which all burst.
    • The barrage size is 8 without any multi-shot effect. The resulting amount is rounded, and is capped at 29.
  • (in Repentance)Collectible Immaculate Heart iconImmaculate Heart: Fires a large number of extra tears alongside the burst that begin orbiting Isaac once they reach the orbit range.
  • Collectible Ipecac iconIpecac: Fires Ipecac tears, with no increase in charge time.
    • (in Repentance) Applies Ipecac's tears down.
  • (in Repentance)Collectible Technology iconTechnology: Does not apply Monstro's Lung's tears down. Grants a charged shot, fires 12 lasers in 30° spead that arc 3-4 times. A laser can hit an enemy multiple times between their arcings.
      • This is equivalent of applying Monstro's Lung's tears down and its charge time, without actually altering tear delay.
    • Multi-shot effects add 12 lasers to the barrage, up to 128 lasers total.
    • Technology + Collectible Mysterious Liquid iconMysterious Liquid: The lasers leave creep each time they arc, resulting in a massive amount of creep.
    • Technology + Collectible Proptosis iconProptosis: The 6x damage is recovered each time they arc, nearly nullifying the distance penalty.
  • (except in Rebirth)Collectible Tech X iconTech X: Fires 3-5 extra rings in 30° spead. Extra rings deal from 50% to 100% damage of the main ring.
    • Additional copy of Monstro's Lung adds 3-5 more rings.
    • (except in Repentance) Increases Tear Delay.
    • (in Repentance) Fire Rate is divided by 3.1.
  • (except in Rebirth)Collectible The Ludovico Technique iconThe Ludovico Technique: The Ludovico Technique has priority. Does not apply Monstro's Lung's tears down. A cluster of variably sized tears orbit the main tear.
  • (except in Rebirth)Collectible Mom's Knife iconMom's Knife: Mom's Knife has priority. Does not apply Monstro's Lung's tears down. Fires additional knives depending on charge amount, each dealing 2x tear damage. Fires 3-5 knives at maximum charge.
  • (except in Repentance)Collectible Mom's Wig iconMom's Wig: Charging an attack spawns spiders in rapid succession.
    • (in Repentance) Spawns spiders upon firing, not charging. The amount of spiders spawned is dependent on luck.
  • Monstro's Lung: Additional copies of this item, such as from (except in Rebirth)Collectible Diplopia iconDiplopia / (in Afterbirth † and Repentance)Collectible Crooked Penny iconCrooked Penny, add (except in Repentance) 10/(in Repentance) 12 tears to the barrage.
    • This effects is equivalent of adding (except in Repentance) 4/(in Repentance) 5 multi-shot effects. The items which have priority over Monstro's Lung or override it (e.g. Collectible Brimstone iconBrimstone/(in Repentance)Collectible C Section iconC Section) benefit from this multi-shot effect.
  • Collectible My Reflection iconMy Reflection: Tears stay in the air much longer and consistently, allowing better reach and more focused blasts before the tears returning to Isaac.
  • (in Repentance)Collectible Technology Zero iconTechnology Zero: Replaces tears with white technology beams that slowly branch out like lightning.
  • (except in Rebirth)Collectible Tractor Beam iconTractor Beam: All the tears follow the beam at different heights without spreading out, making it much easier for multiple tears to hit a target.

Interactions[ | ]

  • (in Rebirth)Collectible Chemical Peel iconChemical Peel: Overridden by Monstro's Lung.
    • (in Afterbirth † and Repentance) Tears have a 50% chance to be Chemical Peel tears.
  • (in Repentance)Collectible C Section iconC Section: Overrides Monstro's Lung.
  • Collectible Cursed Eye iconCursed Eye: Overridden by Monstro's Lung.
  • (in Rebirth)Collectible Epic Fetus iconEpic Fetus: Overrides Monstro's Lung.
  • (except in Rebirth)Collectible Epiphora iconEpiphora: Tears stat is increased properly but firing cancels the effect.
  • Character The Forgotten iconThe Forgotten: Melee swing is unaffected, but the throw attack is replaced by the burst attack with small bones instead of tears.
  • Collectible Isaac's Tears iconIsaac's Tears / Collectible Sad Bombs iconSad Bombs / Collectible Tammy's Head iconTammy's Head: Fires 8 normal tears.
  • (in Rebirth and Afterbirth)Collectible Kidney Stone iconKidney Stone: If Monstro's Lung is picked up while Kidney Stone is ready to fire, charge time for Monstro's Lung will be significantly decreased.
    • (in Afterbirth † and Repentance) Only stat effects from Kidney Stone apply.
  • (in Afterbirth † and Repentance)Collectible Lachryphagy iconLachryphagy: The tears merge into one giant tears a while after being fired, and instantly burst. Without Piercing, most of the damage is often wasted. Without Spectral, the tears often collide against obstacles due to their size.
  • (except in Repentance)Collectible Loki's Horns iconLoki's Horns / Collectible Mom's Eye iconMom's Eye: Adds a chance to fire single tears in the other direction(s).
    • (in Repentance) Adds a chance to fire barrages in the other direction(s).
  • (in Rebirth)Collectible The Ludovico Technique iconThe Ludovico Technique: Overrides Monstro's Lung
  • (in Afterbirth and Afterbirth †)Collectible Marked iconMarked: Only stat effects from Marked apply.
    • (in Repentance) Works as expected. Fires automatically upon reaching full charge.
  • (in Repentance)Collectible Neptunus iconNeptunus: Overridden by Monstro's Lung.
  • (in Afterbirth † and Repentance)Collectible Pop! iconPop!: The tears still fall after being fired.
  • (in Repentance)Collectible Spirit Sword iconSpirit Sword: Overrides Monstro's Lung.
  • Collectible Strange Attractor iconStrange Attractor: Due to the high concentration of tears enemies will be pulled into Isaac at great force, in certain cases enough force to pull enemies through rocks.
  • Collectible Tech.5 iconTech.5: Occasionally fires a linear laser while charging.
  • (in Rebirth)Collectible Technology iconTechnology: If picked up after Technology, Monstro's Lung has no effect. Technology will override Monstro's Lung with a very low firerate.
    • (in Afterbirth and Afterbirth †) Technology has priority. Does not apply Monstro's Lung's tears down. Fires extra lasers in random directions.
  • Collectible Technology 2 iconTechnology 2: Fires a linear laser while charging.
  • Ipecac + Dr. Fetus: Removes Explosion Immunity
  • (except in Repentance)Collectible The Wiz iconThe Wiz: 7-8 tears are fired at each diagonal direction instead of a full burst.
    • (in Repentance) Adds a multi-shot effect (see Notes section). Full-sized barrage on each diagonal direction.

Trivia[ | ]

  • Prior to Repentance, this item's description was "Charged attack".

In-game Footage[ | ]

Gallery[ | ]