Windslicer (5e Equipment)
From D&D Wiki
Weapon (rapier), legendary (requires attunement)
This rapier seems to shimmer as you swing it through the air. This magical weapon has a +2 to attack and damage rolls and deal an additional 1d6 thunder damage. This sword has 10 charges, with which you can expend 1 charge to cast the thunderwave spell at it's lowest level as an action. This weapon regains regains 1d6+1 expended charges at dawn.