Idea - Gazit's Power

My on hiatus NPC-PC Gazit has always had something....weird going on with her, which I haven't really given enough thought to. But apparently a while ago I came up with these specifics for a special power she has because of the circumstances of her birth, and I think I'll post it here just in case I lose it. Anyway, here's some context so this makes sense - Gazit is the only daughter of the Gnomish High Priestess of Ehlonna in the Gnomes' capital city, Brynn. She has no idea who her father is, because the circumstances of her birth were full of angst. He is really a cleric of Nerull, who was ordered by his god to seduce Gazit's mother and impregnate her, with the intent of slighting Ehlonna herself. He posed as a ranger to do this, and succeeded, leaving Gaz's mom as soon as he knew she was preggers. When Gazit was born, her mother was tipped off that something was wrong by her strange eyes. Through divination, the truth was discerned, and her mother resolved never to tell Gazit in fear that it would release something evil within her. Unfortunately, her suspicions are partly correct, as Gazit does have a power within her because Nerull ordered her birth.

And here are some possible specs for that:

Gazit’s extra power, as given by accident from Nerull

- Functions as the spell “Destruction,” except that in her anger she may be able to affect more than one creature.
- Destruction –
Level – Clr 7, Death 7
Components – V,S,F (does not apply here)
Casting time – 1 action
Range- Close (25 ft. + 5 ft./ 2 levels)
Target – One creature (or more, depending on how angry she is, see below)
Duration – Instantaneous (or longer by anger, see below)
Saving throw – Fortitude partial (save = 10d6 damage)
Spell resistance – yes (doesn’t apply here)
“This awful spell instantly slays the subject and consumes the remains utterly in holy (or unholy) fire. If the target’s fortitude saving throw succeeds, it instead takes 10d6 points of damage. The only way to restore life to a character who has failed to save against this spell is to use ‘True Resurrection,’ a carefully worded ‘Wish’ spell followed by ‘Resurrection,’ or ‘Miracle.’”

- Triggered by her anger.
- As such, the power will not attack a random creature; it will affect the focus of her anger.
- If the anger is triggered by the death of someone she loves, and she fails her DC18 check, it lasts for 1d6 more rounds. Also, if she rolls less than a 10, she loses control entirely (as opposed to the normal 5, see below).

-Once in effect, it is almost impossible to control. A successful DC18 check will allow her to control it by will, otherwise, there is no way to stop it except by divine intervention. Over time she may learn to control it and the DC check will go down.
- This check may also be used to control how many creatures are affected. If she makes the check, she can effect up to 4 more creatures as she desires. This number will go up as she learns to control it.
- If she rolls a 5 or less, she will lose control entirely and a DC10 reflex check must be made by other party members to make sure they are not affected. This too will go down as she learns to control it.
- If she fumbles, the spell knocks her unconscious for 1d12 hours.

Oh, the spell stats and quoted information (C) Wizards of the Coast.

And I'm thinking that maybe it shouldn't be too powerful right now, since its only starting to develop. Maybe I'll lessen the number of dice for a successful save, and have it go up once she gets more levels. Dunno.