Blade of Anj-Ule

You conjure a blade above the battlefield and pull it down into an opponent, centered on a point you choose within range. A creature makes a dexterity saving throw or takes 3d8 slashing damage on a failed save, or half as much damage on a successful one. The blade, once created, could be used by anyone as a +1 magic blade for 1 minute or until dispelled. You decide whether the blade summoned is a Dagger, Short Sword, Long Sword, or Greatsword, and you become proficient with that blade for the duration.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.