Bound into this weapon is a level 5 spell. The spell is determined when the weapon is created and must belong to the Conjuration, Divination, Evocation, Necromancy, or Transmutation school of magic. The weapon has 6 charges and regains 1d6 expended charges daily at dawn. While holding the weapon, you can expend 1 charge to cast its spell.
The spell's saving throw DC is 17, and its attack bonus is 9.
If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.