I've been playing since either D1 alpha or beta so I know quite a bit of story if I do say so myself haha so I'm making a theory, that maybe the way the witness is going to show up to get the traveler is turning the whole moon into a huge portal where they can go through the ascendant plains, they'll make this portal to us by using the pyramid thats been sleepin within the moon already thats just been pretty much been sitting dormant. So moon will turn into wack portal and the end starts, Completely just theory though haha