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Mom's Heart

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Moms Heart Full

Mom's Heart is the final boss of The Womb II. In the beginning of the battle it is always accompanied by two Eyes. If you listen closely to its theme song, you can hear heart beats.

Behavior

Mom's heart spawns two to four monsters and then disappears. After killing those monsters, the heart will reappear in the middle of the room for 3-4 seconds, spawn more monsters, then disappear again. If you manage to kill the monsters within two seconds from their spawning (before the Heart disappears), Mom's Heart will stay on screen and spawn a next pack.

Strategy

Provided you have bombs, placing a bomb just as the heart is about to drop into vision will not only damage the heart, but may also destroy any monsters the heart spawns; this can afford you essentially double the attack time against the heart.

When Mom's Heart drops down to 33% health, it will stop hiding but continuously spawn monsters and start firing bombs similar to those fired by Sloth and other monsters. The explosions will leave glowing puddles of blood, similar to the ones left by the brains, that do damage on contact and last for several seconds. The monsters it spawns in this phase are usually weaker, consisting largely of various small flies.

Alternatively, using The Bible will act as an instant kill, similar to using it on Mom. This is not to be confused with the similar looking 'Book of Revelations' item which has no effect on Mom or Mom's Heart.

Also items such as the My Little Unicorn and the Gamekid do not work on it, but those items may be useful to fight the monsters it spawns.

After you defeat Mom's Heart nine times, it is replaced with It Lives.

Gallery

Bugs

  • When defeating Mom's Heart using the Bible, the health bar will not disappear, but the game will go on with the ending as usual and the chest will appear (seems to have only appeared since The Wrath of the Lamb was released)
  • The firing bombs, similar to those fired by Sloth, can get you out of the map and then you will be unable to finish the game (because you are stuck in an invisible wall).
  • If you are in the Womb XL or Utero XL, then the boss right before Mom's Heart/It Lives! will also play the heart's music, and Mom's Heart/It Lives! will still play its own music. This also occurs with Mom in The Depths XL and Necropolis[XL].
  • Audio: If Mom's Heart or It Lives is taking multiple hits of damage right before it starts firing bombs, many occurances of it saying "Isaac!" happens.
  • If you kill yourself after defeating Mom's heart, but have a respawn item (1up, Ankh, Guppy), when you return to the room, mom's heart will have returned, but the chest is still there. You must wait for the heart to rise back up before running into the chest. The game goes on normally after opening it.
  • If Mom's Heart or It Lives is damaged enough to start firing bombs before it comes down from the roof (via The Candle), it will stay on the roof and its shadow will remain, but bombs will still be fired from the center of the room.

Videos

The Binding of Isaac - Unlockable Boss Moms Heart01:18

The Binding of Isaac - Unlockable Boss Moms Heart

A fight with Mom's Heart, plus the game's first ending. (BEFORE WOTL)

Cain vs. It Lives - TBoI 101:06

Cain vs. It Lives - TBoI 1.4 Petden

It Lives fight in 1.4


Bosses
Regular Bosses
Blastocyst button

Blastocyst
Brownie
Chub button

Chub
Daddy Long Legs button

Daddy Long Legs
Dangle
Dark One button

Dark One
Dingle button

Dingle
Duke of Flies button

The Duke of Flies
Fallen button

The Fallen
Fistula button

Fistula
Gemini button

Gemini
Gurdy button

Gurdy
Gurdy Jr button

Gurdy Jr.
Gurgling button

Gurglings
Haunt button

The Haunt
Larry Jr button

Larry Jr.
Little Horn
Loki button

Loki
Mama Gurdy button

Mama Gurdy
Mask of Infamy button

Mask of Infamy
Mega Fatty button

Mega Fatty
Mega Maw button

Mega Maw
Monstro button

Monstro
Mr Fred button

Mr. Fred
Peep button

Peep
Pin button

Pin
Polycephalus button

Polycephalus
Rag Man
Scolex button

Scolex
Turdlings
Widow button

Widow
Posthumous Bosses
Adversary button

The Adversary
Blighted Ovum button

The Blighted Ovum
Bloat button

The Bloat
Cage button

The Cage
Carrion Queen button

Carrion Queen
The Forsaken
The Frail
Gate button

The Gate
Hollow button

The Hollow
Husk button

The Husk
Lokii button

Lokii
Monstro II button

Monstro II
Teratoma button

Teratoma
The Stain
Wretched button

The Wretched
Alternative Bosses
CHAD button

C.H.A.D.
Gish button

Gish
Sister Vis button

Sisters Vis
Steven button

Steven
Triachnid button

Triachnid
Harbingers
Conquest button

Conquest
Death button

Death
Famine button

Famine
Headless Horseman button

Headless Horseman
Pestilence button

Pestilence
War button

War
Final Bosses
XXX button

???
Hush
Isaac button

Isaac
It Lives button

It Lives
Lamb button

The Lamb
Mega Satan button

Mega Satan
Mom button

Mom
Mom's Heart button

Mom's Heart
Satan button

Satan
Ultra Greed
Minibosses
Seven Deadly Sins
Envy button

Envy
Gluttony button

Gluttony
Greed button

Greed
Lust button

Lust
Pride button

Pride
Sloth button

Sloth
Wrath button

Wrath
Seven Super Deadly Sins
Envy button

Super Envy
Super Gluttony button

Super Gluttony
Super Greed button

Super Greed
Super Lust button

Super Lust
Super Pride button

Super Pride
Super Sloth button

Super Sloth
Super Wrath button

Super Wrath
Ultra Pride button

Ultra Pride
Angels / Demons
Krampus button

Krampus
Angel button

Gabriel
Angel button

Uriel
Angel button

Fallen Angels
LEGENDS: The Binding of Isaac bosses are yellow. Wrath of the Lamb bosses are teal. Rebirth bosses are orange. Afterbirth bosses are crimson. Afterbirth † bosses are violet.

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