When this spell is cast the illusionist is able to alter himself or herself in a manner similar to a change self spell. However, alter self enables the caster to effect a quasi-real change, so that size can be altered by 50% of actual. If the form selected has wings, the illusionist can actually fly, but only at one-quarter the rate of speed of a true creature of that type, and with a loss of two Maneuverability Classes (to a minimum of “E”). If the form has gills, he can breathe underwater as long as the spell lasts. Using alter self to change into a larger creature does not permit addi- tional attacks or damage unless the illusionist is accustomed to this form.