Talk to Chuckles in the castle courtyard and play The Game. The rules are simple: just use words of only one syllable. The scroll Chuckles rewards you with is long to read, but it starts the second main quest of the game. In short, it tells you to go to Minoc and talk with Margareta.
Talk to Margareta and get her to tell your fortune. She reveals that you should go to Empath Abbey and ask about the Wisps, then talk to the Wisps in the Yew Forest, and eventually meet the Time Lord.