Ninjago Dragons Rising theory!
Sourse dragon talked about this "cycle".
"Maybe we meet again at the end of this cycle"
Cycle can mean some kind of loop. That all of that already happen. Time loops aren't really new trop but i think it can be interesting and as I saw today someone talking about that Lloyd maybe will die at the end od Dragon Rising I just come up with another thing.
The end will be "end of this cycle". It will be the event that is reason of this cycle, being their end, marking it reset and starting new one.
It can be also that somehow the cycle will be broken, but I actually think not breaking it can be interesting but it's up to discussion.
Co now, what is "center" of loop?
I think the center is Lloyd. We saw his vision after first encounter with Source Dragon. The graveyard with ninja masks and sand. Sand is really made me think of destruction, the battles and this post-apo climaxes. I don't think we should take this scene as realism more like symbolism. All ninja will fall and world will become wilderness.
He showed him the moment where cycle is restored. Lloyd alone is quite powerful being Green Ninja and being able to connect with Golden Power (real power never really fade right?) And now we see he is able to use power led by source dragon. What we can assume isn't normal as he sayed it couldn't "change him forever".
So, this end is Lloyd seeing his family falling, (they don't need to die but he think that), and with his own power, creation and destruction, and energy of source Dragon recreate world to be again with his family. To spend time with them again, to not lose them. He kinda become the most powerful being.
It may be a little too much but it could also be why the other realm Merge with Ninjago specifically. Because there is the center of the loop, Lloyd. It all come back to him, and maybe some plan of FSM? Maybe he setup for something to happen but it back fire and left all realms in infinite time loop of creation and destruction?
Actually it would also fall with whole deal about creation and destruction because it would mean the world is destroyed to be create yet again.
I know It may be and most probably isn't the case. But I just wanted to share that. What do you think? I would love something like this to happen! (If not there are always fanfics....)