I managed to get a dragon in my latest game and they are completely insane. 100 atk, 60 health, 60 armor, 60 mana, and all their magic does true damage so they can eat any major stack without even so much as a burp. I just stick my dragon with the kids to level them up quickly and its just fun.
Only complaint, is that they are seriously mobility challenged. If I could change 1 thing about this game would be to separate attacks and mobility.