We need something that will destroy all the value lvl 50 players have laying around.
Therefore I suggest your home island can be attacked by a dragon, he will destroy 1 building every n hours and you will have to defeat him using a huge number of , but also & .
When you do, you get the status of "dragonslayer" and your prestige rises with the number of dragons you have slain.
There's a small chance a slain dragon leaves behind an egg, that will hatch into a small dragon. This dragon can be sent with your generals and he will grow and learn with every battle...
Eventually this dragon will become quiet powerful and will be a big advantage on the battlefield.
Suggestions?