1 minute/mana

As two actions, you create a sword-shaped plane of force that hovers within 5 meters that lasts for the duration or until you cast this spell again. When you cast the spell—and once on on each of your turns thereafter as an action—you can move the weapon up to 5 meters and cause the sword to strike a creature within 1 meter of the sword. The target takes 5d4 + your spellcasting ability force damage.

Augment

You can increase the damage by 3d4 for each additional mana expended.