The dragon is not omniscient, it doesn't make sense for him to know his own future.
The dragon is eternal, not timeless, he doesn't like to be in a static state.
The dragon didn't have a cause since he's eternal.
The dragon is omnipotent.
The dragon is a slave to his own freedom.
Just a reminder...we're not really talking about an actual dragon, but about an immaterial being who can manifest itself into a dragon.
I disagree with some of your logic, but I concur with some of your conclusions, so I'll concentrate on where we differ. So far, we agree that the cause is:
1. immaterial
2. omnipotent
3. a free-causal agent
4. uncaused
But I take issue with your assertions that this
non-dragon being is:
a. Not timeless
b. Not omniscient
response to a. You said that he would be eternal (which means "lasting or existing forever; without end or beginning"), but that he would not be timeless. That doesn't make sense if he had no beginning but time did (as logic and scientific evidences seems to suggest). If he had no beginning, but time did, then there must be a state of affairs in which he exists but time doesn't,
ergo he would be timeless.
response to b. I don't agree with your objection that he would not be omniscient because he would not know his own future. If he is omnipotent, he could certainly make everything happen just as he desired and thus determine (and thus know) his own future. In effect, "So let it be written, so let it be done." But some might say, as in the case of the Christian god, suppose he had given some of his creation the gift of free will? How would he
then know his own future since he doesn't control how his creatures would act, and then how he would counter-react? The answer is that if he created these beings, he would certainly know how they
would react when faced with certain choices. So, this omniscient being wouldn't necessarily have to
see the future, as if time was laid out along a ruler and he could skip down to the end of the ruler and see the end as if it already exists but hasn't come to pass yet. Instead, he could simply know how his own self would react given certain situations, and also how his creatures
would react in certain situations. Therefore, he could in effect know what will happen in the future
(even his own future). BTW (off-topic), in regards to Christianity, this is commonly known as Molinism.