Hellheart Locket

In Expedition to Castle Ravenloft, the Hellheart Locket powers the Dayheart's protection of connection vampires from sunlight by channeling the psychic energy from the devil's trees of the Devil's Garden. It also provides considerable physical protection to the Dayheart. If smashed the locket no longer provides power or protection to the Dayheart and the bearded devil bound inside serves the breaker for a short time before going back to the Nine Hells.