Higure, the Twilight Forged

Forged in the heart of a dying star in a universe that has long since gone dark, this unspeakably powerful blade exists on two planes of existence at once.
Higure has 3 charges. On your turn, you may use one of these charges as a bonus action. If you do, you disappear from the Material Plane and immediately enter the Shadowfell for 1 second. Inside the Shadowfell, your movement is tripled. Higure regains all charges at dawn.