Circle around enemy,

I’m making a 3rd person game where I want my player to be able to shoot lighting. I want a circle to appear around the enemy (on the ground), where I’m aiming (to represent where the lightning is going to hit). What is the best approach to achieve this?

Draw a circle with alpha background and make a plane/quad object with the circle as cut-out material. Then, if you aim at the enemy, check via ray down the ground. Set position of the quad then to hit.point and align it via transform.up = hit.normal to the normal of the ground.