void Start () {

        Rigidbody2D player = GameObject.FindWithTag("Player").GetComponent<Rigidbody2D>();

        Vector3 mousePos = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, Camera.main.nearClipPlane));
        Vector3 playerPos = new Vector3(player.transform.position.x, player.transform.position.y);

        effect.transform.LookAt(mousePos - playerPos);
        //Quaternion.LookRotation(mousePos - playerPos);
    }