Fifteen Percent Concentrated Power Of Will

omg the MagicQuest books!! I still have my Perilous Gard MagicQuest copy, I think (a library book sale copy). That was by far my favorite. I also loved the Magic Three of Solatia (I had a library book sale copy of that one too for many years, but gave it up when I bought my e-copy) and the Throme of the Erril of Sherill. I was never able to find The Ash Staff, which I desperately wanted to read at the time... I feel like I later read Mont Cant Gold and didn't like it enough to remember anything about it, but it's also possible I didn't read it.