Let me preface by saying I really have no idea.... but I will do my best to help.
It sounds like based on the dictionary the wyvern names sort of work by Hellsguard Roegadyn where you have an adjective followed by a verb so following that model "ohl Deeh" probably works better?
It sounds like based on the dictionary the wyvern names sort of work by Hellsguard Roegadyn where you have an adjective followed by a verb so following that model "ohl Deeh" probably works better?