Blood Oath

Blood Oath is a passive item.

Effects

• Stabs Isaac at the beginning of each floor, draining all but half a heart of his red heart containers.
  • Increases damage and speed each time Isaac is stabbed. The stat increases scale with the amount of health lost.
  • Isaac can avoid damage from Blood Oath with invincibility, but he won't gain the damage and speed increase if he does.
  • If Isaac is already at half a red heart, no blood is taken and no stat increase is granted.

Notes

• It is possible to prevent red hearts from draining while still gaining the stat increases, as long as Isaac's speed is high enough to immediately leave the starting room.
• If Isaac has Rotten Hearts, each Rotten Heart leads to the loss of half a Soul Heart.
  • If Isaac does not have enough Soul Hearts, he will die.

Synergies

• Bloody Lust: Damage taken by Blood Oath at the beginning of the floor triggers the Bloody Lust damage bonus for each half-heart lost. By losing more than 3 Red Hearts, it is possible to gain the max damage bonus of Bloody Lust at the beginning of the floor.

Trivia

• This item originated from the Binding of Isaac: Community Remix mod.

Seeds

R6HB VG08 (First floor curse room)