Démonszív

Démonszív (literally "demon's heart" in Hungarian) is a term used in Hungarian folklore and contemporary fantasy to describe a legendary object, core, or organ believed to house demonic essence or power. The phrase is used both for literal artefacts and as a metaphor for the corrupting influence of infernal forces.

In traditional tales, a démonszív is depicted as a dark, often crimson or black heart that can be severed from a demon or sealed in a vessel. Possessing such an object is said to grant extraordinary abilities, such as control over demons, extended vitality, or forbidden knowledge, but it typically exacts a heavy price—madness, corruption, or loss of humanity.

In modern Hungarian fantasy literature and role-playing games, the démonszív appears as a plot device or quest item. Variants range from a physically tangible heart to a metaphorical core within a cursed relic. Some versions enable the wielder to bind a demon, others corrupt the user after prolonged use.

Symbolically, the démonszív draws on the motif of the heart as the seat of will and identity, entwined with themes of temptation, power, and moral consequence. It functions as a cautionary emblem about seeking power at the cost of one's humanity.

Related concepts include demon hearts in other traditions and the broader motif of the heart as source of power. The term is primarily found in Hungarian-language fantasy, folklore studies, and game lore.