Here are a few things I can think of
1. If you have Get Together, add spellcasters and sages to a club. Then you can randomly gather at your home, duel, ask for spells/potions, etc. 2. Try searching the gallery for a room with all of the books/tomes. Then you can read from home.
3. Put another Sim in the household and give them some death flowers. The Sim you want to advance quick - you can let them practice/perform as much magic as you want without fear of death bc there's always a Sim there with a Death Flower to revive in case things to bad
