Binding of Isaac: Rebirth Wiki

Added in Afterbirth

D8 is an unlockable activated item added in The Binding of Isaac: Afterbirth.


  • Re-rolls Isaac's damage, tears, range, and speed.
    • Each stat is given a multiplier, ranging from 0.5x to 2.0x, which applies after all other adjustments.


  • Luck, Shot Speed, and Tear Height are unaffected.
  • The Tears multiplier can cause Isaac's tear delay to decrease beyond the normal cap of 5.
  • The Speed multiplier cannot cause Isaac's speed to decrease or increase past the normal range of 0.1 to 2.0.
    • The multiplier overrides the Speed Up effect of A Pony A Pony or White Pony White Pony, which normally raise Isaac's Speed to 1.5 if it is below that value.
    • Removed in Repentance The hidden maximum Speed value also gets the same multiplier, which may further cap Isaac's Speed.
  • The multipliers are chosen in a way that keeps their total product roughly the same; the item will most often increase two and decrease two of Isaac's stats, although it can increase three and decrease one or increase one and decrease three. Larger increases are balanced by larger decreases.


  • Added in RepentanceBook of Virtues Book of Virtues: Spawns a black glowing die wisp on the middle ring. Each wisp has a random damage and fire rate assigned to it. Wisp health is not randomized.


  • Added in Repentance Jacob and Esau Jacob and Esau: Only the brother using D8 will get their stats rerolled with the exception of Speed, which is shared between both brothers.

In-game Footage[]



  • The sprite for D8 has an 8 and a 7 below it, but judging by how real 8-sided dice look, the 7 should be a 5 instead.