Fire Storm question

[Fennario]

I have an offensive casting/healing fvs that I am leveling. At level 18 (soon) I plan on wearing an upgraded Regalia of the Phoenix just for the greater evocation focus. It's way easier and cheaper than a black scale robe.

Now I was thinking, instead of wasting all those fire damage goodies from the robe, why not put them to use? So Fire Storm is tempting me.

I never really played around with this spell on my cleric too much as he had no way to boost its power, so I just kind of forgot about it. I have since TR'ed my cleric, so I have no way of cheaply testing this spell for myself.

I do understand that I only get 3 level 8 spells, but with some swapping around I think I could squeeze it into my spell book if its fun.

I also understand that a lot of end game mobs are fire immune. But my 20 sorc still seems to use his firewall in plenty of spots.

And I understand that Blade Barrier will continue to be my bread and butter.

So I guess what I am asking is whether or not this spell is fun to throw around? My fvs is high wisdom, double evocation focused, and as I said will be wearing this robe. He also has a Skiver in his offhand. (praise to the ah + purple coins + my 20 monk, or I would have never gotten him a skiver )

What kind of damage will Fire Storm be doing with this gear? What is the fun factor of the spell? Is it worth the spell swapping hassle?

Thanks.

EDIT: I just realized the Skiver means nothing for this spell anyway as the robe will have major fire lore on it. See why its tempting me?

[Aspenor]

Don't do it.

[Fennario]

Don't do it.

Lol, is it that bad?

[Arovin]

From what it looks like the only use for Fire Storm would be for low DC casters as it has no save. Where you have a high Wisdom there is no need to use firestorm over Blade Barrier.

[Matuse]

With poor damage dice, no superior potency that reaches high enough, no class enhancements that boost it or give it extra crit chance, and the large number of monsters who are immune or resistant to fire...it's just not worth the bother. Even using the Regalia's combustion click won't save this dog of a spell.