Karl inspected the option with Skill Book and realized that it was nearly exactly the same as [Refreshing Lightning] except that it included mages with high Lightning Affinity in the list with Lightning Element beasts, Clerics and Shamans.
They already knew that limited it to mostly just a few beastkin and the Blue Dragon Clerics as well as Shamans, but if some of the mages could use [Lightning Zone] as well, it would be a little less frustrating for the Librarian and her people.
The blue dragon sighed. "I suspected that it might be another of those evil spells. But it's a good one again, so I will endeavour to teach more of our people to use it."
"If you give me more time, I can come up with something more user-friendly. Honestly, I should spend more time in your Library trying to learn skills myself so that I'm not completely limited to beast friendly skills." Karl replied regretfully.