- For the Mysterious Egg object in Nagrand, see Mysterious Egg (Nagrand). For the Frostfire Ridge item, see .
After three days, this egg will hatch into a , which will contain one of four companions, a Green Proto-Drake, or some .
- Patch 4.0.3a (2010-11-23): Now takes only 3 days to turn into a Cracked Egg and has a slightly greater chance of awarding the Reins of the Green Proto-Drake.
- Patch 3.0.2 (2008-10-14): Added.