Disrupt Undead Options

[Sikret]

The idea of this new necromantic spell was originially introduced here as a 6th level spell. Later, I realized that having it as a 6th level spell is not a great idea for some reasons:

1- There are already too many good 6th level spells in the game.
2- The spell seems a bit too powerful to be 6th level

I didn't want to abandone the idea of this spell; so, I now return with a new proposal to add it as a replacement for a higher level spell. I also changed its name after reading the suggestions and opinions about the name.

The spell's new description is this:

Disrupt Undead (Necromancy)
Level:?
Range: Touch
Duration: Instantaneous
Casting Time: 7
Area of Effect: One Undead Creature
Saving Throw: None

By means of this powerful spell, the mage uses his powerful necromantic touch to disturb the negative forces floating inside an undead creature. The spell bypasses the target's magic resistance (if any) and inflicts a huge amount of damage, which varies depending on the udead type:

Skeleton Lords (and lesser undead creatures): 10D8

Skeleton Warlords: 8D8

Skeleton Grandlords: 6D8

Liches, Master Vampires and Vampire Lords: 5D8
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Tell me your opinion about the spell's appropriate level and the spell you suggest to be replaced with this new spell.

Some ideas which occurred to me:

(1) 9th level; replace "Gate"
(2) 8th level; replace "Symbol of Death"
(3) 8th level; replace "Summon Fiend"

If you think that the spell can be 9th level, I may even consider chaning the damage dice type to D10. What do you think?

[Shadan]

Aren't there already a few nice 7th level spells in the game (counting in the new 'Hand of Undoing' spell)? I thought that the repertoire of 8th and 9th level spells are probably poorer and may welcome a new addition.

You are right, Sikret. But concerning that both Hand of Undoing and Distrupt Undead is enemy spicific spells, they don't have to competite with each other. What else, both are similar spells. Golems and powerful undeads are similar enemies, but Hand of Undoing doesn't damage the more powerful golems, while this damages all undeads in the game. On the other hand, most powerful golems are more powerful than more powerful undeads in the game.
So I think lvl 7 is perfect, but I can imagine as level 8 also.

[Sikret]

But concerning that both Hand of Undoing and Distrupt Undead is enemy spicific spells, they don't have to competite with each other.

I know, my point was not that the two spells have to compete with each other. The point is that there are already good 7th level spells in the game. (It's the same problem we had with 6th level spells).

Cocofiend is not one of the good ones of course and I can replace it, but it will just add another good spell to the collection of 7th level spells which will make decision even harder for your sorcerer; while 8th and 9th level spells are not so crowded with excellent spells.

Replacing "Gate" is actually preferbale, in my opinion; because we already have ADHW as a powerful 8th level necromantic spell. No?