In-game pickup line
“Evil up”
Mechanics
What Daemon's Tail does
- Reduces the usual heart spawn chance to about one fifth and increases the chance of keys.
- Many non-specific heart drops that still appear become Black Hearts instead.
Achievement #127
How to unlock it
Defeat Satan as Azazel.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
It can suit a run that values keys and black health, but it makes ordinary red healing rarer.
Reference
Game data and sources
The trinket ID, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
