Engraved Pin

The first fatal hit becomes a timed chance to clear the encounter and return with 30 Life.

Use it when

Level it early when one difficult room, not steady chip damage, is ending promising nights.

Limit

If the room cannot be cleared before the invulnerability expires, it provides no recovery.

If it is absent

Use Luckier Tooth for an automatic recovery that does not depend on clearing the room in time.

When to replace it

Keep it while its condition supports the current route, then replace it when another keepsake solves a more immediate constraint.