So I came up with the idea of a new military building which allows us to "build" and use a new unit - Dragons.
This type of unit should take up a lot of space compared with normal units, because, come on, it's hella strong, it's a dragon.
Also this unit would be able to fly over walls and attack enemies with an AoE Fire Breath dealing some good damage.
But dragons shouldn't be revived or healed by the priests, this wouldn't make any sense, they need daylight to recharge their sun givin power - That's where the Dragon house comes into play.
The Dragon House Lvl 1:
There is one Worker/Builder to "build" a dragon and 1 space for it to heal.
The Dragon House Lvl 2:
There is now 2 Workers/Builder and 2 spaces for the dragons to heal.
Note:
If a dragon dies, it should take a few days to get revived - in winter longer than in summer, because there is less sunlight.
I'd love to get your opinion on that. I think there are too little special units in the game so the lategame feels kinda boring.