WHO GETS SACRIFICED TO THE STAIRCASE PRISON.
The easy option would be lloyd.
It cant be cole or zane, theyre tied too much to arin and kai in the element of tournaments. And isolating zane doesnt do much for his character. Not in the same way confronting kai would do.
Nya or Jay could work but ugh.
If Nya then you lose nya and kai. And jay would 100% have his big crash out and honestly be A PROBLEM TM during the tournament. Cole would be mega distracted between nya missing and jay being an erratic wildcard. Jay would go from most positive to most negative during this time. (The kids are scared and concerned).
If jay you lose jay vs kai avenge nya moment and you'd get back to square one feral nya which would also be A PROBLEM TM for the tournament. Cole constantly running around being NYA NO to her. I think if jay was sacrificed then nya WOULD defeat kai. (Or maybe this crushes her further? Maybe losing jay and being hit with losing her brother makes her stop. Maybe she for once doesnt want to choose violence as the answer. Maybe losing to kai completely makes her lose her spark for awhile. Until jay returns in the most epic way possible)
WHICH HOLD ON. THE PARRALELS BETWEEN NYA AND KAI BOTH CHANGING IN SOME WAY. BETWEEN FERAL NYA AND EVIL KAI. CURLY WE ARE GENIUSES.
If either of them, this could be a chance for lloyd having moments with them. Maybe he's still their master for the tournament in some way and spends his time keeping jay/nya on track. For nya it'd be empathising with her for having a family member turn evil. For jay it'd be losing the love of your life.
But imagine lloyd being isolated...and still getting visions. Yet he cant tell anyone about them. (I mean. He could tell bonzle but the info would be useless to her). He cant warn his friends. He begins to use the visions to keep up with whats going on. Even tho theyre terrifying. Bc his visions start to bleed the past and the future together. Ptsd lloyd real.
And ofc his friends would still be upset that lloyd is gone but itd be treated closer to everyone's reaction in canon I think. Jay might take it the hardest bc it is yet another tragedy thrown in his face that he has to fake being alright with. And then evil kai enters the chat, defeats nya, and he shatters.
Anyways. Spitballing here. :]
OKAY I'VE BEEN THINKING ABOUT THIS
As much as I love the idea of sending Nya or Jay to Stair Hell... we lose too many moments. I agree that it gets much too complicated when we let Jay and Nya miss the tournament.
BUT LLOYD. LLOYD. I LOVE HIM USING HIS VISIONS TO WATCH OVER HIS FRIENDS EVEN IF IT DRIVES HIM CRAZY.
You have such galaxy brain ideas I had to draw it