معنی عبارت The new ambassador, disdaining the ordinary methods...

The new ambassador, disdaining the ordinary methods of transport available to mortals, by means of his occult knowledge and magical powers evoked a fiend in the shape of a huge black horse. 

برگردان متن بالا رو بی زحمت بفرمایید. البته بیشتر مفهوم جمله اول رو متوجه نشدم.