Bound Blade

You summon a blade (The shape of your choosing) into your hand. You can use your action to make a melee spell attack with the bound blade.

The blade deals 1d8 force damage. This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).

It glows slightly, and is obviously magical. The blade lasts until dispelled, or dismissed. If disarmed or dropped, the blade vanishes.