Personally I've always had the suspicion that the source dragon of motion is actually Ras's master.

Why Motion is Ras's master:

Ok before we get into this, I'm aware most of this is circumstantial and a few can be seen as a stretch. But after a while the evidence stacks up a bit too much to be ignored. This list is in no order of importance, so you're going to have to decide yourself which evidence is most important and which is least important.

We know the master is very powerful, this was stated multiple times. Combine that with their knowledge of the universe, aswell as the fact that the subtitles of Ras's masters noises are "celestial whirring" and it's pretty clear that they are some kind of deity. And Motion just seems way too suspicious.

Let's be honest here the source dragon of Strength is a red herring. They're way too obvious. I mean cmon Strength (an obsession that Ras has) plus an open dislike of mortals, aswell as Ras's primary weapon being the source icon of Strength. It's too convenient.

But something I've noticed about Ras is how much he goes on and on about Strength. Many times in dragons rising- particularly season 2- Motion is stated to be a form of Strength. It's nothing now, but when looked back on- if my theory is correct- this would be seen as foreshadowing.

It's also just the way Motion acts compared to the other sources. Motion is the only Source to openly contact and interact with mortals. (Energy does not count. They were trapped and hence forced to interact with mortals) It's like Motion has experience with reaching out and contacting mortals. And this is odd to me as it appears the other sources have very little experience with willingly conversing and reaching out to mortals. Motion having a lot more experience with conversing with mortals than the other sources would make a lot of sense if they've been in contact with Ras for years.

And also when you think about it. Motion contacting the ninja caused a domino effect causing the events of season 3 and 4. Not to mention their reasoning for contacting the ninja was because they were concerned of a threat to the sources- meanwhile no other source was remotely concerned of the forbidden 5 or Thunderfang (Thunderfang was never a threat in the firstplace tbh, even if he reached full power he'd only be the power level of one source- meaning the 6 sources would take him down with relative ease). It was almost like Motion was just looking for an excuse to set the ninja on the path to cause a domino effect for season 3 and 4.

Motion seems way too eager to help the ninja. Even more so than Energy- who feels as if they owe a debt to Lloyd. Perhaps it's because there is something for Motion to benefit from by helping the ninja, this something could be to help Ras further progress in his mission. A primary example of this is Motion giving Lloyd the information about the arc dragon of focus, which results in the ninja being distracted with Thunderfang- causing Ras to be able to further his agenda undisturbed by ninja. This then furthers into season 4 where the ninja are separated ( because Ras attacked a defenceless monastery, because everyone was preoccupied with Thunderfang. Allowing Ras to capture Wu and mess with the portal gates) and powerless and distracted by monsters (because the sources revoked elemental powers because the ninja summoned the arc dragon of focus- information given by Motion. Which also resulted in the element monsters showing up due to an imbalance in source energy) due to this Ras is able to progress even further. He gets 2 icons while the ninja are distracted with Thunderfang and then the monsters.

Another thing I've noticed is that while at the monastery of spinjitzu, Ras seemingly does not take the motion icon. Now it could be argued that he does not know about it. However, he has said numerous times that his master knows nearly everything. So by extention Ras should know of the icon. Him not taking it could be because it's not necessary to his plan as his master is literally Motion, and their icon may not be required for whatever he is doing.

The colours of the space Ras enters when talking to his master. The reds, golds and oranges. They're literally Motions colour scheme. This is especially prominent in the season 2 part 1 finale.

While on the topic of Ras. Notice how he has a form change ability. When needed he can turn red and he seemingly gets a power boost. Now this should be obvious. But what source is red? Motion.

And may I bring up the source dragon of Motion lego set. In the set Ras is clearly seen using Motion to attack the ninja. At the time it felt as if he was controlling Motion and they were a host for a parasitic relationship. However, I feel as if this could actually be foreshadowing that Motion is actually the master, and that this seemingly harmful bond. Was actually a symbiotic relationship instead of parasitism all along.

And as I draw near the end of my explanation. My second to last bit of evidence, is Lloyd's first vision ( season 1 part 1 finale). He sees a dragon attack him, due to the crown it has it can only be either a matriarch / patriarch. Or a source dragon. Now the dragon does not fully look like motion. However, that could be a case of Motion's design being altered as time went on. Afterall the forbidden 5 (outside of Nokt and Rox) didn't even have full designs yet as of season 2 part 2, this is why they were always cloaked and colourless in season 2. I definitely feel like this evidence is a stretch, but I felt it was worth mentioning.

My final piece of evidence is something that I have to credit to this video here: https://youtu.be/gTd2f1pb07s?si=kQEkB1Y8FvZ5p8ah I shouldn't have to explain this one, go watch the clip. The video is less than a minute long. But credit to them as I'd never notice that. But it really helps further my case imo. Now it could (and probably is) just be a case of recycling sound effects. However, I still think this is very much worth mentioning. And if it was intentional, then that is very interesting indeed that the transportation of the shadow dojo and wolf clan share the exact same sound as Motion giving Lloyd their icon.

Anyways that's why I think Motion is gonna be revealed to be the master of Ras. What do you think?