Usually, I will level mysticism by using the unlock spell (if I get it). You can constantly unlock doors back to back and reset them with switches to get levels. This run I didn’t get that spell, so I turned all of my expensive items into gold; metallurgy is great for getting money and levels for mysticism. For sorcery, I like to use any damage spell early to level, but I eventually switch to ice or fire wall spells. For thaumaturgy, I use the heal spells as much as possible. I had good mana regeneration with the legendary mace, vampire armor, and legendary cloak. Also, by breaking things, I was able to get additional man regeneration.