Eda and King will both end up commenting on Luz's new look during their reunion, and we might get them joking about how string beans looks appetizing to play off the joke from the last episode
Belos is going to possess the Titan's heart in the throne room so that he can take over the Titan's body that the boiling isles is on as his way of ridding the world of witches
The colorful balls that the Collector traps Luz,Eda and King in is what's going to lead to the whole nightmare scenario of Luz now being in the Emperor's place
The rest of the main cast apart from Luz will be put in a state of amnesia as puppets, where they will be a rebel group fighting against the Emperor who is now Luz and she'll have to find a way to snap them out of their puppet-like states
The outfits that the rest of the main cast are in besides Luz, are representations of back when they felt less confident and more vulnerable. The collector is regressing their development in order to give them less of a fighting chance and with Luz her outfit is playing into her fear of having ruined everyone's lives by unintentionally helping out Belos, and blaming herself for it.
Luz's Glyphy's will be the one kind of magic she can use that the collector is going to have a tough time fighting against, and might give her a slight advantage
The floating lights we saw in the teaser trailer are what is going to give Eda and King a power boost, I believe that the floating lights might actually be palisman particles? As they kind of look like the light that emitted from Flapjack when he died
Time pools will play a part in the finale, to give our heroes some information on how to defeat the collector/ We're going to find out what lead to the Collector being trapped and it's going to help King understand him better where he'll be able to convince the Collector to restore the boiling isles back to how it was before
Everyone will reunite with their families and we'll get Eda sprinting towards Raine to either give them a hug or a kiss
Lilith will become a teacher at Hexside where she'll teach students how to use glyphys and Luz/or Hooty is going to be her teacher's assistant
Luz will have a way to travel between both realms so that she doesn't have to choose between the boiling isles and Earth/ The collector and King will have helped figure out a way to use their powers to help make accessible portals, where more humans will also be able to visit the boiling isles as well
We'll be getting a time skip like in Kipo and the age of wonderbeasts where we'll get to see the characters having slightly aged and maybe even have a Raeda wedding or at least have them dating again?
I noticed something when rewatching some of the episodes of the DHMIS tv show. In episode 3 "Family", Duck has pictures of some random family in his wallet and one of the pictures shows someone who looks alot like Lesley from episode 6, and in one of the pictures there's who I presume is Lesley playing either a trumpet or a trombone? And in episode 2, Yellow Guy starts playing that same instrument! Implying that Lesley taught her son how to and It's kind of implied that Yellow guy might be the puppet reincarnation of Lesley's son David.
As hinted with the tombstone in episode 2 having the name David engraved on it, Yellow Guy having a D stitched onto his overalls and Lesley herself saying that Yellow guy is not her "Real Son" not that he isn't her son at all meaning he's likely a puppet version of David and is unaware of it.
Wait...Does this mean that this whole time they were supposed to be earning coins! but only if they did what was expected of them by the council? Which if we look at the first episode where they earned their coin, the briefcase was teaching them the lesson of the day without being mistreated like other teachers in later episodes, and it felt like a proper episode of a children's show since Yellow Guy was also regarding the audience and breaking the fourth wall like most educational children shows do... But he does it at least 2-3 more times in other episodes and we never see the whole coin thing being mentioned again besides the first 2 episodes, so are they not doing what the council wants them to after the 1st episode or are they receiving the coins off screen?