In-game pickup line
“Blood and guts!”
Mechanics
What Shard of Glass does
- Taking damage can spawn a Red Heart and starts a stream of blood tears in Isaac's firing direction.
- In Repentance the bleeding periodically drains red health until suitable healing or another ending condition stops it.
In a run
Practical note
Look for red-heart healing promptly after the bleeding begins.
Reference
Game data and sources
The item ID, quality and pool listings, 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.
