It’ll be nice to be able to finally fight the Ninja boss.
How about a super long and tough base like a “boss fight”. It’ll be so long that there’s no way one person can finish it. So when a king dies or ran out of time, the next teammate will continue the path. The tent will start from where the king dies or ran out of time.
The Ninja boss has the ability to disable the use of scrolls and revive. The only way to defeat it is to have proper teamwork. The boss’s difficulty and reward scales according to alliance level.
This event can run simultaneously on the weekend with whatever ongoing event. It won’t add any burden to players as one can only do ONE raid per player. Once he loses, he can’t do another raid. His teammates will have to pick up from where he left off. Of course, that means only one player can do the boss raid at a time.