The egg has a 5 day hatch time, that's why it wasn't found before ( in response to someone saying it must have a crazy low drop rate if people only find out about it now)
Got mine in around 40 kills.
Damn, I hate this kind of mount
Got an egg on day 1 and I never got a mount from it.Just assumed it was another one of the RNG eggs that gives yolk or a battle pet.
Got an egg while questing. Never expected that it will drop mount today after hatching.
Around 400 kills total fo the egg.
Egg dropped on first kill of one of these.
Farmed over 5,000 Diseased and Bonetooth over 20hours, no drop.