In the SRD it states:

> 
> The first special function, ball lightning, releases one to four balls
>  of lightning (ring wearer’s choice). These glowing globes resemble
>  dancing lights, and the ring wearer controls them in the same fashion
>  (see the dancing lights spell description). The spheres have a
>  120-foot range and a duration of 4 rounds. They can be moved at 120
>  feet per round. Each sphere is about 3 feet in diameter, and any
>  creature who comes within 5 feet of one causes its charge to
>  dissipate, taking electricity damage in the process according to the
>  number of balls created.
> 
> 
> 

It also states:

> 
> The spark shower is a flying cloud of sizzling purple sparks that fan
>  out from the ring for a distance of 20 feet in an arc 10 feet wide.
>  Creatures within this area take 2d8 points of damage each if not
>  wearing metal armor or carrying a metal weapon. Those wearing metal
>  armor and/or carrying a metal weapon take 4d8 points of damage.
> 
> 
> 

<http://www.d20srd.org/srd/magicItems/rings.htm#shootingStars>

Neither of these functions directly address a need to either make a saving throw or the requirement to make a ranged attack to hit a target. Should these functions require either saving throws or attack rolls?