Lifebane, Dampen Magic & Cloak. The third is rather dull, but I would love to use the other two! They were great ideas for spells with minor neatening. So I think Gretta Darkkettle could have something to do with it. When she retired, she could have taken a few spell-books with her, and we should get a tutorial for Level 20+ to go to her house. When there, this is the plot:
Gretta: Ah, young wizard! You came to see me about the the old spells, yes? Well, when I taught Alchemy at the school, I was always untrusting of Malistaire. And rightfully so! So I made certain when I left that I'd take away one of his most unfair spells, to prevent him having the upper hand in a duel. This spell was called Lifebane. When I accused him to Merle, we argued and I left to Krokotopia for a while, where Alhazred taught me some ancient balance spells to help me. Then I returned to Ravenwood and retired. I've heard from my good friend Dalia- I mean Professor Falmea - that these spells are no longer taught. So I spoke with Eloise, Milo, Farley & Katherine about clothing, pets, seeds & jewels using these spells, and they had some left. But I can't just go around giving these spells to anyone. Go to Dworgyn in Nightside, and ask if he has any Lifebane-related spells or items left in the School. Hurry back now!
Dworgyn: Lifebane? My my, who told you about that spell? Oh, Gretta doesn't surprise me. Do I have any remaining items? Hmm... I'm not sure. Check with Mortis outside.
Mortis: We meet again, young wizard. Lifebane, you say? I was the tree they carved a certain deck from that contained that spell. I'm certain if you hand Gretta some of my fallen branches, she should fashion some from it.
Gretta: A deck? Wonderful! Now go speak with Alhazred by the Krokosphinx and ask about the spell Dampen Magic.
Alhazred: Dampen Magic? What brings such a skilled wizard to underhand tactics? Nevertheless, I have a small underground shrine, beneath the Krokosphinx, where all forms of gems with all forms of spells are formed. I found the citrine you need yesterday. True serendipity. Here, take it as a gift from me.
Gretta: Well done, a jewel! Now speak with Diego on Unicorn Way about a Cloak, when Celestia was rediscovered, the version replaced it.
Diego: A Cloak? I have a sword with such a spell attached from long ago. You've fought well so far, take it as a sign of respect.
Gretta: Excellent! Gretta fashions the jewel into place on the sword and murmurs as she entwines the twigs around the handle. Once it's done, it glows a brilliant silver, and Gretta turns to you. Now, in order to make certain you know how to handle such power, you must duel me for a range of items giving these cards, from dark plants to cloaked cloaks, duel me and see what you get!
Once you fight her, she should always drop the wand with all 3 (but to avoid OP players, it should have just 3 spells), and she should have different level-based versions. Don't forget to reply with your own ideas!