Felicianus gladly answers them all. He takes the opportunity to also explain some basics of shapes. People are born with a few based on the shapes of their parents. Changing shapes is painful, but gets easier with practice. Every time one changes shapes they will "reset" to a default age based on when they acquired that shape, thus people can live indefinitely or until they lose all their shapes. Shapes can be sacrificed to another shape, thereby granting that the surviving shape a new magical power.
Some people are born "shift-dancers", they have some kind of special power - called a "dance" - that tends to affect all their shapes and makes them unique. Felicianus himself is an example.