Completely disappeared without a trace. And deserters, who should have been brought back from previous installments of Heroes.

How about making it 30 cells right away? Otherwise, it seems a bit underwhelming. At least it will effectively block archers from the very beginning of the battle with its bulk. However, there will be a problem with heroes – they won't be able to use this creature. Why? Because they simply won't be able to place it on the battlefield within the tactical grid. That's not right, is it?

And "Hatred" will be Nygon's future spell. So :P

Added 3 minutes later
And, by the way, Shevriel, green dragons are already "friendly" with the elves.
And where do you get these "fantasy books" from? With ice elves and molting dragons? O_o