Arial cyclone

A tornado-like tower of wind with a 15 ft. diameter encircles you and a person of your choice. No melee attacks and normal ranged attacks can enter the cone of wind, ranged attacks with advantage may roll a d12. If the roll is over 10, the attack may enter the cyclone. If a person inside the circle gets pushed out by a melee attack or accidentally falls out, the person will receive 15 damage.