Actually, way back in the day we tested Fate Egg. Every creature has an equal chance of hatching, save for a few that never hatch at all (chimera etc)
The Average stats were about 4 attack 5 hp. Since the total cost is 4
(3 to summon, 1 to hatch) and there's the 1 turn delay period it come's out being a substantially worse creature than Graviton Merc (who isn't exactly a powerhouse either). Compared to other "1 turn delay" creatures like Graboid or Lycanthrope Fate Egg is absolutely pathetic.
To answer a couple things that keep coming up:
Fate Egg Nymphs: Yes, you can get nymphs from a fate egg, but really most nymphs are only useful in a deck designed to use them. When you randomly shove nymphs into a deck they often end up working against you, or at the least you won't get much out of them.
You didn't get lucky: The fact that fate egg is luck based tendsto disguise just how bad the stats are. The fact that you
can get a 10/10 dragon for 4
does not change the fact that you
usually won't. Blaming losing with fate egg on bad luck is roughly the same as a man who goes broke after wasting all his money at a casino blaming his financial troubles on luck.
Now, if someone would be kind enough to fill me in (I've been gone for a while), do the new shard creatures ever hatch from a fate egg?