Elytheria's Celestial Starbeam

A pale ray of starlight springs forth and toward a creature that you can see within range. The chosen target must make a Dexterity saving throw. Upon failing, a creature is dealt 1d8 fire and 1d8 radiant damage and has the Stunned condition until the start of your next turn. Upon succeeding, a creature is dealt half as much damage and is not Stunned.

Whenever a creature fails against the Dexterity saving throw of this spell due to the Stunned, Paralyzed, Petrified, or Unconscious conditions, it is not Stunned by the spell and is instead dealt an additional 1d8 fire and 1d8 radiant damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, choose one of the following options: 

1. For each slot level above 1st, the fire and radiant damage both increase by 1d8.
2. For every two slot levels above 1st, one additional creature within 30 ft. of the initial target can be targeted by the spell.