Only the Veil spell works that way, actually.  It's explicitly called out in the description of the Disguise skill (http://www.d20srd.org/srd/skills/disguise.htm) that form-altering magic like Polymorph or Shapechange is only worth a +10 to the Disguise check.<br/><br/>If you're using Disguise Self, that does give you the +10 bonus, though, so Zekolyn can't see through your Disguise anyway.