Monstro's Lung

Monstro's Lung is a passive item.

Effects[ | ]

Grants a charged shot that fires 14 tears in the same fashion as Monstro.
- 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: Tear Delay × 4.3 / Fire Rate ÷ 4.3 (roughly 0.23x).

Notes[ | ]

Charge time can be found with the following equation:

\text{(time)} = \frac{1}{30}(Roundup(\text{Tear Delay)}) \approx \frac{1}{\text{Fire Rate}}

Each tear has independant chance to have Tear Effects.
Tear falling speed ups will slightly reduce the effective range of Monstro's Lung.
- Since range ups always add to tear falling speed, every range up reduces effective range.
Multi-shot effects such as 20/20 or Keeper adds 2.4 tears to the barrage per tear they normally grant. The resulting amount is rounded, and is capped at 50.

Synergies[ | ]

20/20 / The Inner Eye / Mutant Spider:
- 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.
- Adds multi-shot effect they normally grant (see Notes section).
  - Without any other multi-shot effect, the barrage size becomes 16/19/21 respectively.
Almond Milk / Soy Milk: Fires automatically upon reaching full charge.
Anti-Gravity: Hover effect is overidden, but tear delay down still applies, which greatly reduces the charge time.
Blood Clot: All tears are larger, with increased damage (as opposed to every 2nd tear like Blood Clot alone).
- Tears have a 50% chance to be Blood Clot tears.
Brimstone: 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 Azazel and Tainted Azazel's versions of Brimstone.
- Brimstone + Eye Sore: Overrides this synergy with a chance to shoot 1-3 additional beams in random directions.
Chocolate 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 Lilith's Incubus; picking up Chocolate Milk will significantly reduce damage and increase charge time.
- 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%.
  - $\text{Charge Time (s)} = \frac{1}{30}(Roundup(\text{Tear Delay} \times \frac{5}{2} + 1)) \approx \frac{5}{2 \times \text{Fire Rate}}$ ${\text{Charge Time (s)}}={\frac {1}{30}}(Roundup({\text{Tear Delay}}\times {\frac {5}{2}}+1))\approx {\frac {5}{2\times {\text{Fire Rate}}}}$
    - This makes damage per second drop to 80%.
Eye Sore: Adds a chance to fire 1-3 additional barrages in random directions.
Dr. Fetus: Monstro's Lung has priority. Does not apply Dr. Fetus' tears down. Fires 6 bombs which detonate simultaneously.
- 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.
Epic 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.
Flat Stone: All tears bounce simultaneously; the effective range is greatly increased.
Haemolacria: 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.
Immaculate Heart: Fires a large number of extra tears alongside the burst that begin orbiting Isaac once they reach the orbit range.
Ipecac: Fires Ipecac tears, with no increase in charge time.
- Applies Ipecac's tears down.
Technology: 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.
- $\text{Charge Time (s)} = \frac{1}{30}(Roundup(\frac{43}{10} (\text{Tear Delay} + 1))) \approx \frac{43}{10 \times \text{Fire Rate}}$ ${\text{Charge Time (s)}}={\frac {1}{30}}(Roundup({\frac {43}{10}}({\text{Tear Delay}}+1)))\approx {\frac {43}{10\times {\text{Fire Rate}}}}$
  - 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 + Mysterious Liquid: The lasers leave creep each time they arc, resulting in a massive amount of creep.
- Technology + Proptosis: The 6x damage is recovered each time they arc, nearly nullifying the distance penalty.
Tech 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.
- Increases Tear Delay.
- Fire Rate is divided by 3.1.
The 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.
Mom'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.
Mom's Wig: Charging an attack spawns spiders in rapid succession.
- 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 Diplopia / Crooked Penny, add 10/ 12 tears to the barrage.
- This effects is equivalent of adding 4/ 5 multi-shot effects. The items which have priority over Monstro's Lung or override it (e.g. Brimstone/C Section) benefit from this multi-shot effect.
My Reflection: Tears stay in the air much longer and consistently, allowing better reach and more focused blasts before the tears returning to Isaac.
Technology Zero: Replaces tears with white technology beams that slowly branch out like lightning.
Tractor 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[ | ]

Chemical Peel: Overridden by Monstro's Lung.
- Tears have a 50% chance to be Chemical Peel tears.
C Section: Overrides Monstro's Lung.
Cursed Eye: Overridden by Monstro's Lung.
Epic Fetus: Overrides Monstro's Lung.
Epiphora: Tears stat is increased properly but firing cancels the effect.
The Forgotten: Melee swing is unaffected, but the throw attack is replaced by the burst attack with small bones instead of tears.
Isaac's Tears / Sad Bombs / Tammy's Head: Fires 8 normal tears.
Kidney 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.
- Only stat effects from Kidney Stone apply.
Lachryphagy: 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.
Loki's Horns / Mom's Eye: Adds a chance to fire single tears in the other direction(s).
- Adds a chance to fire barrages in the other direction(s).
The Ludovico Technique: Overrides Monstro's Lung
Marked: Only stat effects from Marked apply.
- Works as expected. Fires automatically upon reaching full charge.
Neptunus: Overridden by Monstro's Lung.
Pop!: The tears still fall after being fired.
Spirit Sword: Overrides Monstro's Lung.
Strange 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.
Tech.5: Occasionally fires a linear laser while charging.
Technology: If picked up after Technology, Monstro's Lung has no effect. Technology will override Monstro's Lung with a very low firerate.
- Technology has priority. Does not apply Monstro's Lung's tears down. Fires extra lasers in random directions.
Technology 2: Fires a linear laser while charging.
Ipecac + Dr. Fetus: Removes Explosion Immunity
The Wiz: 7-8 tears are fired at each diagonal direction instead of a full burst.
- Adds a multi-shot effect (see Notes section). Full-sized barrage on each diagonal direction.