You weave together arcane symbols with your hands and meld magical energy together untill a shield of solidified light appears in front of your hand. This magic shield lasts until the spell ends. It counts as a shield and a simple melee weapon that you are proficient with. It deals 1d6 psychic damage on a hit and has the finesse, light, and thrown properties (range 20/60). In addition, this shield gives you a bonus +1 to your AC. 

If you drop or throw the shield, then it dissipate at the end of your turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.

This spells damage and AC increases by 1d6 & +1 when you reach 5th level (2d6/+2), 11th level (3d6/+3), 17th level (4d6/+4).