This is for anyone who has an epic flyer, but does not have a netherdrake yet. I had something interesting happen to me yesterday, and I want to see how duplicable it is.
Got to a floating island where you turn into an orc. Dismount. turn on aspect of the wild and fly back to a normal area. Then come back here and let me know if your netherdrake is still there. Another thing I'm testing is if it's just wild or any aspect. I've had this happen a few times, but I've only gotten it to happen once on purpose, and I'm not entirely sure what's causing it, as one time I didn't have any aspect on at all. The drake will of course only last until you dismount. This is similar to a herbalist picking dreaming glory, which accomplishes the same thing.