A flail is a melee weapon similar to a club with the inclusion of a chain connecting the handle to the striking surface. It inflicts bludgeoning damage. Neverwinter Nights includes two types of flails — the light flail and the heavy flail.

Flails originated as farm implements, used for threshing grain. When farmers were called to fight, they discovered that flails were also useful for threshing opponents. A variant in which the long striking surface is replaced by a spiked ball would have use only as a weapon, but might also have less basis in history. Regardless of its historical roots, the spiked ball variant is classified as a morningstar within Neverwinter Nights.

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