Miyako's Main Weapon

Name of Weapon: Twisted Blade
Image/Description (preferably and image so we can tell of it better, but if you do description make sure its in fairly great detail please):
Twisted Blade is made from condensed energy, and is summoned at will.
Effect(s) [Powers of the weapon]: Increases Miyako's Speed and Agility.
Drawback(s) [things that may damage or after effects]: Its strength depends on Miyako's concentration; it can be impossible to break, or it can just shatter in one hit, depending on how focused she is.
Type (Offensive, Defensive, Supplementary): Offensive weapon.
Class of Weapon (A, B, or C): A.

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