Book of Revelations

Book of Revelations is an unlockable activated item.

Effects

 * Gives one Soul Heart.
 * Increases chance for a Devil/Angel Room door to open by 17.5% (35%) if held while killing the final Boss of the floor.
 * If the Book of Revelations is used at least once in a floor, a Harbinger will (have an increased chance to) replace the current floor's boss:


 * 1) Famine in  /  /
 * 2) Pestilence in  /  /
 * 3) War in  I /  I /   I
 * 4) Death or Conquest (if unlocked) in  I /  I /   I
 * 5) The Headless Horseman on any floor in Chapters 1-4

Synergies

 * Inner ring. The wisps become tiny crosses that do not fire tears, spawn a Harbinger familiar for the current room when destroyed.

Trivia

 * The Book of Revelation (note the lack of an "s") is the final book of the Bible. It depicts the apocalypse through a vision shown to John of Patmos and includes the Four Horsemen and themes of Hell, Satan, and The Lamb. This explains why using it causes the next boss to be a horseman, as well as why it increases the chances of a Devil Room.

Seeds
3C6Z 880R (Treasure Room adjacent to spawn) 9867 22FF (Treasure Room adjacent to spawn) 42ZY EYNS (Treasure Room adjacent to spawn) 6A7C BBKN (Treasure Room adjacent to spawn) BQ7G DLKQ (Treasure Room adjacent to spawn) G98Z MNSS (Treasure Room adjacent to spawn) RKV8 O883 GKM3 XJJ0 (Treasure Room adjacent to spawn) V10Q 3WX1 (Starting item as Eden) DM91 QYEQ (First Treasure Room)