The Harbingers

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The Harbingers is the achievement that unlocks Famine, War, Pestilence and Death as four additional bosses. The Harbingers are referenced in the Bible as the Four Horsemen of the Apocalypse. These bosses are only unlocked once Mom has been defeated for the first time. These bosses, with the exception of Conquest, are guaranteed to drop either a Ball of Bandages Ball of BandagesBall of Bandages Icon.pngOrbiting familiar that deals damage to enemies. If collected while already having one, makes the familiar evolve. Only drops from Horsemen. Similar to Cube of Meat. or a Cube of Meat Cube of MeatCube of Meat Icon.pngOrbiting familiar that blocks enemy shots and deals damage to enemies. If collected while already having one, makes the familiar evolve. Only drops from Horsemen. Similar to Ball of Bandages.. By using the Book of Revelations Book of RevelationsBook of Revelations Icon.png6 roomsAdds 1 soul heart, increases the chance for a Devil or Angel Room to appear, and increases the chance for the next boss to be a Horseman (except on XL floors and floors with fixed bosses such as Mom). on a floor, there is a much higher chance that the boss for the current floor will be a harbinger unless the floor has a fixed boss (for example, Mom in The Depths and Necropolis) or the harbinger has been fought already.

Famine[edit | edit source]

Famine is the Harbinger for Chapter 1.

Boss Famine.png

Pestilence[edit | edit source]

Pestilence is the Harbinger for Chapter 2.

Boss Pestilence.png

War[edit | edit source]

War is the Harbinger for Chapter 3. War cannot be found in The Depths and Necropolis II, as Mom will always be the boss of that floor.

Boss War.png

Death[edit | edit source]

Death is the Harbinger for Chapter 4. Death cannot be found in The Womb and Utero II, as Mom's Heart or It Lives will always be the boss of that floor.

Boss Death.png

Conquest is an alternative boss to Death in Chapter 4. He is unlocked once 10 items have been taken from Angel Rooms. Conquest does not drop normal Horseman items and drops White Pony White PonyWhite Pony Icon.png6 roomsPassively grants flight and increased speed. Upon use, Isaac charges in the direction the pony is facing, becoming invulnerable during the charge and damaging enemies while also casting the effect of Crack the Sky. instead.

Boss Conquest.png

Unlockable Achievements[edit | edit source]

Trivia[edit | edit source]

  • Conquest was added in the Binding of Isaac: Wrath of the Lamb. In the Bible, Conquest is actually the first Horseman to appear, while Pestilence is a Horseman existing only in popular culture, coming from a different translation of the Greek word 'Thanatos', often meaning Death instead (the canon four Horsemen, thus, are Conquest, War, Famine and Death).
    • Conquest's entry in the secrets is called "The Forgotten Horseman", because of that very reason.
  • Death is the only horseman specifically given a name in The Book of Revelation.
  • The use of the Book of Revelations Book of RevelationsBook of Revelations Icon.png6 roomsAdds 1 soul heart, increases the chance for a Devil or Angel Room to appear, and increases the chance for the next boss to be a Horseman (except on XL floors and floors with fixed bosses such as Mom). item to summon a horseman for the current floor is reference to the fact that the book of the Bible in which the horsemen are described is Revelation.
  • A horseman known as The Headless Horseman can replace any other Harbinger in-game.
  • None of the Harbingers have a death animation.
  • The horses used by the Harbingers resemble stick horses.
Bosses Boss Monstro.png
Chapter 1
Stage basement.png
Stage cellar.png
Stage burning basement.png
Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2
Stage caves.png
Stage catacombs.png
Stage flooded caves.png
Carrion QueenC.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe Wretched
Added in Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3
Stage depths.png
Stage necropolis.png
Stage dank depths.png
The AdversaryThe BloatThe CageThe GateGishLokiMask Of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4
Stage womb.png
Stage utero.png
Stage scarred womb.png
BlastocystThe BloatConquestDaddy Long LegsDeathLokiiMama GurdyMr. FredScolexTeratomaTriachnidMom's HeartIt Lives
Added in Afterbirth † Sisters VisThe Matriarch
Added in Afterbirth Blue Womb
???
Added in Afterbirth Hush
Chapter 5
Stage sheol.png
Stage cathedral.png
SatanIsaac
Chapter 6
Stage dark room.png
Stage chest.png
???The LambMega Satan
Added in Afterbirth Greed Mode
Ultra Greed
Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void
Stage the void.png
Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman


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