 She instructs Marak to lead the other mad east across the desert to find the source of the madness, and promises that if he returns with the answer, she will make him ruler of Kais Tain.After several weeks in the harsh desert, the visions and voices draw Marak and the others to the silver tower where they meet Luz, who appears to be a deity like the Ila.Luz explains to Marak that the "mad" have tiny "creatures" in their blood that makes them see and hear things.