Bloody Lust

Effects

Damage increases as Isaac receives damage. The damage increase stays for the whole floor, but resets upon entering a new floor.
- (Removed in Repentance) The first three times Isaac is hit, his damage is increased by 0.5. The next three times Isaac is hit, his damage is increased by 33%.
  - (Added in Repentance) Damage is increased by flat amounts: +0.5 for the first hit and an additional +0.2 for each hit, until +1.5 at the sixth. The maximum total is +6.0.
- Any damage taken past the sixth hit does not further increase damage.
Isaac becomes redder as his damage increases.

(Added in Repentance) Birthright + (Samson) Samson: Birthright allows him to gain 4 more damage boosts at the same +0.2 intervals, for a new maximum total of +14.0.
(Added in Afterbirth †) Dull Razor: Safely provides the damage boost without needing to take damage.

(Added in Afterbirth) Diplopia: No effect, damage up still caps at +6 and increases at the same intervals