Shattered Kingdoms

Mob-exclusive spells make no sense.

Hey, you've just spent the last decade in the infernal outlands defeating the minions of extraplanar demigods. You've travelled from the subterranean towers of the deep-elves to the highest spire in the tower of the rose finding out the secrets of the arcane.

But then you get a spell you've never seen before cast on you by a blithering nyogtha that's never been out of the dungeons beneath castle morea in its life.

Congratulations, shattered kingdoms.

Those dungeons get government funding.