Conjured Blade

Holding your hand out, you conjure a blade of magical energy. This magic weapon lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 1d4 acid, cold, fire or lightning(you choose when you cast the spell) damage on a hit and has the light and thrown properties (range 20/60). You may use your dexterity, strength or your spell-casting modifier for the attack and damage rolls for this weapon. This spell lasts for a number of rounds equal to half your proficency modifier.
At higher levels- When you reach 5th level, the damage die changes to a d6. When you reach 11th level the damage die changes to a d8, and you may choose necrotic or thunder damage as a damage type. When you reach 17th level the damage die changes to a d10.