If not created outright, some Sims are simply born magically inclined, and will gain a lot of their abilities when they hit the Teenager life stage. Though witches don't look any different than normal human Sims, they are treated as their own, unique race. First of all, if your Sim is already one of the other supernatural races ( Mummies, Vampires, Fairies, Werewolves, or genies), that Sim cannot be a witch. You'll need to keep a careful eye on any witch operating under Free Will. When a witch is on high Free Will, he'll try to constantly play with magic, even if it makes the mana bar deplete. It's still much faster to let the bar fill back up on its own you just have to make sure it doesn't fully deplete. After six hours, the mana bar will completely refill. Be careful: a fully depleted mana bar applies a debuff moodlet for six hours and stops any automatic recovery.
