Tideglaive

The Tideglaive is a legendary polearm rooted in maritime folklore, described as a glaive with a blade shaped like a curling wave. It is said to harness tidal energy to empower strikes and influence water currents.

Construction and properties: The weapon is said to be forged in tidal furnaces from a mythic alloy called brinesteel, with an aquamarine core. Runes along the haft are believed to respond to moisture, causing the weapon's edge to sharpen in wet conditions. Practical limitations include a dependence on water; in arid environments, the weapon loses its enhanced capabilities and can rust if not preserved.

History and cultural significance: Earliest references appear in coastal annals from the early medieval period, though many details are likely legendary. It is associated with seafaring orders such as the Tidebound, and is credited with decisive acts during sieges near harbours. The weapon is said to pass through a single line of guardians, after which it is said to be hidden in a tidal shrine.

In modern fiction: The Tideglaive appears in fantasy literature, role-playing games, and video games as a rare artifact granting water-based combat enhancements. Its depiction varies, but it is commonly portrayed as both boon to mariners and perilous to wield without prudence.