Deflect Projectile

Whenever you or a creature within range is about to be attacked by a ranged weapon attack, you can quickly swipe your hand at the projectile approaching them, and a flexible barrier is produced around the creature. The spell lasts until the beginning of the creature's next turn. The projectile is deflected, and sent back at the attacker who shot it, using the same attack roll as the original attack. The attacker does not have to hit the creature affected by this spell for this spell to work, and this spell must be cast before it is known whether the projectile being shot hits or misses. The projectile deals its normal damage to the attacker if it hits it. The caster of this spell rolls the damage, but does not have to know the modifier. 

When cast at higher levels, you can choose another creature within range to apply the barrier to as well for each spell level up, to a maximum of 3. For each increase in level, add an extra +1 to the damage of the deflected projectile if it hits the attacker, to a maximum of +3. Additionally, for each level increase, the deflected projectile gains a bonus to the original attack roll, +1 for each level to a max of +3.

If this spell is cast at 8th level or above, it instead lasts until the beginning of 3 of the affected creature's turns, the maximum creatures affected becomes 6, and add an extra 3 of the projectiles damage dice instead of a modifier to the damage.

If the attacker is also affected by this spell, the projectile instead bounces back and forth between the creatures. Whoever's barrier ends first can be hit by the projectile, using the normal above rules.