Players expend fatigue points to cast spells, and must roll percentile dice to succeed. Many of the more powerful spells have a very low chance of success, and may "backfire" with random results (many quite unpleasant). By expending experience points, a mage may improve their ability to cast specific spells by gaining rank in them. There are also advanced spells which can be obtained from more powerful mages in one's Magic College. This advanced knowledge may require a substantial cash payment or some kind of quest to obtain, however. Certain spells require expensive or rare elements to work properly, while the majority are merely spoken.