Probably the ugliest of these weapons was the windblade, a product of Merianvard artificery. A windblade resembled, in form, a smaller version of the Variasotec double scimitar without its hilt: i.e., two opposingly curved blades joined in the center, and sharpened to a razor’s edge.
No hilt was required for the windblade, as it was a specialized weapon designed to be wielded by a psychokinetic adept (of strength estimated at 288-plus, Revised Impulse Scale). The adept would levitate the windblade and cause it to spin rapidly; then, would propel it in looping curves amid the ranks of the enemy, slashing through everything in its path.
It proved less than useful as a battlefield weapon, both due to armor halting the blade’s rotation even when penetrated, and to the limited number of psychokinetic adepts with sufficient strength to use the windblade; on such occasions as it was deployed openly, the windblade battle often turned into a contest between multiple adepts, each trying to deflect, or seize control of, their opponent’s windblade while forcing their own to conclusion. Such contests were typically inconclusive, except when one adept possessed both great strength and the ability to handle multiple windblades simultaneously with dexterity.
Rather, it was as a weapon of mass assassination that the windblade was unparalleled. Wielded from ambuscade, a windblade could slash an entire rank or file of enemy troops to ribbons before a defense could be mustered. Likewise, scout troops armed with blackened windblades could scourge an overnight encampment clean of life while those within slept and, often, before the guards could be alerted.
– Ranged Weapons of the Era of Hand and Fire