The green proto drake

So ive been trying to find the way to get rep with the Oracles to get the Mysterious Egg to hopefully get the Green Proto-Drake is that even possible? If it is than

if it is than how?*

Heard it was only working for horde? It is possible for one faction, but don't know if it drops

I am on horede and i am reverted with oracle, whoever egg is not working for me. I cant open it.

You have to wait 3 in game days for it to hatch...

Thanks! I'll try on my horde toon than, but it does seem strange how only horde works.(if it even works)

not working. cannot open the egg no matter how long u wait