What manner of…
Definition 1 of 1
Pro Tip 1/3Literary Flair
The phrase adds a touch of old-fashioned or classical style to your language. 
What manner of festivities are these that light up the night?
Pro Tip 2/3Conveys Wonder
Use it to express amazement or puzzlement about something unfamiliar. 
What manner of machine could perform such astounding tasks?
Pro Tip 3/3Historical Context
It's archaic, so it fits well when discussing historical topics or in historical fiction. 
What manner of hero was he that people still honor him today?