Dawnhammer

Light coalesces in your grip, creating a hammer of divine energy. The magic hammer lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d6 force damage on a hit and has the light property. Creatures you hit with this weapon are surrounded by holy light, giving the next attack made on this creature have advantage.

If you drop the weapon, it dissipates at the end of the turn. If the spell persists, you can use your bonus action to cause the weapon to return to your hand.