Thunderous Sling

You concentrate the air around you, vibrating it to create friction and form a sling of fast moving wind. This magic sling lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d6 thunder damage on a hit and has the light, loading, and range properties (range 30/60). In addition, when you use the sling to attack a target, all creatures within 10 feet of the target take 1d6 thunder damage.

If you drop the weapon, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.

At Higher Levels. When you cast this spell using a 3rd- or 4th-level spell slot, the damage increases to 3d6 and 2d6. When you cast it using a 5th- or 6th-level spell slot, the damage increases to 4d6 and 3d6. When you cast it using a spell slot of 7th level or higher, the damage increases to 5d6 and 4d6