The big problem I see with Fate Egg is that even without considering the one turn spent as an Oty snack, Fate Egg is one of the
least efficient cards in the game. If it introduces such a huge cc vulnerability then it should be
more efficient to make up for it, not
less.
Mechanics wise, I really don't think anything needs changed--the card is a lot of fun the way it is. I'd just recommend lowering the summon cost to
and then raising the hatch cost to
The lower total cost would make it a more viable option, and moving some of the cost to the hatch would make cc a little less brutal.