Volley of lead

You conjure 4 beings wearing odd grey green uniforms holding odd looking rifles. on your turn as a bonus action you can target up to 4 creatures (1 being each) and make a ranged spell attack, alternatively you may have all the beings attack just 1 target or mix it up any way you see fit. on a hit the target takes 3d10+10 damage as it is hit with multiple projectiles.