Duality

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Item icon
Item altar

 
 
 
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Character appearance
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Item Pool Devil Room.png Devil Room
Item Pool Angel Room.png Angel Room
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(page 5, column 13, line 1)
 
Duality Defeat Ultra Greedier as LilithDualityDuality
Added in Afterbirth †

Duality is an unlockable passive item added in Afterbirth †.

Effects[edit | edit source]

  • Whenever a Devil/Angel room spawns after defeating a boss, the other will also spawn.
    • Upon entering one, the other one will disappear.
    • In rooms with only two accessible walls, only one of the two will spawn.

Notes[edit | edit source]

  • Even with Goat Head Goat HeadGoat Head Icon.pngA Devil Room / Angel Room Door will always spawn after every boss fight, excluding the first floor and floors after Utero II/Womb II. or Eucharist EucharistEucharist Icon.pngAn Angel Room door will always spawn after every boss fight, excluding the first floor and floors after Utero II/Womb II. both rooms will not stay open, and entering either of the rooms will make the other disappear.
    • This applies even if teleported to the devil room (for example, through a red chest); only the devil room will open when the boss is defeated.

In-game Footage[edit | edit source]


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