Chromatic Weapon

You weave together threads of power to create a weapon of solidified elemental magic in your hand. You choose acid, cold, fire, lightning, poison, or thunder for the type of damage the weapon wil deal. This magic weapon lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d8 damage of the chosen element on a hit and has the finesse, light, and thrown properties (range 20/60). 

If you drop the weapon or throw it, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the weapon 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 3d8. When you cast it using a 5th- or 6th-level spell slot, the damage increases to 4d8. When you cast it using a spell slot of 7th level or higher, the damage increases to 5d8.