Binding of Isaac: Rebirth Wiki

Unicorn Stump is an activated item.


  • Gives invulnerability and +0.28 speed for six seconds, but removes the ability to shoot tears while the effect is active.



  • Added in Repentance4.5 Volt 4.5 Volt: With some damage source while this item is active, it can be permanently invulnerable inside the room while you have enemies.
  • ???'s Only Friend ???'s Only Friend: The fly can still be controlled while invincible.
  • Added in RepentanceBook of Virtues Book of Virtues: Spawns an orbital rainbow Wisp on each use of Unicorn Stump, giving up to 8 extra orbitals. Wisps do not deal contact damage.
    • When Isaac is invulnerable, wisps become much more vibrant and deal contact damage equal to 2x Isaac's damage -5.
    • If Isaac has less than 2.5 damage, the wisps will deal no damage even if Unicorn Stump is active.
  • Mom's Knife Mom's Knife does contact damage in the same direction it was being held at the time of using the Unicorn Stump, giving a massive amount of free damage by ramming into an enemy.
    • If you have the Yes Mother? Transformation, you can basically do the same thing using this item.
  • On contact items (Aries Aries, The Virus The Virus, etc.): Freely usable in basically every room.


  • The Ludovico Technique The Ludovico Technique: The tear stays in place while Isaac is invincible; although Isaac cannot move the tear, it will continue to damage enemies during his invincibility. This is very useful for stationary enemies.
  • Added in AfterbirthMarked Marked: Isaac's tears will still fire, but he will be unable to move the crosshair while invincible.

In-game Footage[]



PC KR9M SBJB (Treasure Room adjacent to spawn)

PS4 HE3K 410E (First floor Treasure Room)

Vita A00Z C87K (First floor Treasure Room)