An inquisitive one, armed with fair questions. He decided he would answer honestly, but with particular reservations. "While Galahad preserved his memory, he does not steer historical memory toward it, nor does he set it as the standard for the Knight's Radiant. It is a nigh impossible standard to compete with. On top of that, nearly three hundred years have passed since Solomon's age. Twelve generations of Knights have grown up and passed away. Perhaps the biggest reason is me. Before his death, Solomon entrusted his Seal with me. He felt that such power should not remain in the hands of humanity, fearing that the endless cycle of strife would eventually claim his Noble Phantasms." Merlin's face turned sullen, almost guilty. He fumbled around with the single ring in his hands before responding to Shiro's second, and arguably more important, question.
"Like I said, I was not the holder of only one - but all ten. I've brought you here, without your Grandmaster's knowledge, because this generation of Knight's Radiant, no, of all Surgebinders, face an unprecedented crisis. A crisis that could engulf the entire world in fire and fury, and destroy the very foundations of humanity." Solomon's face turned grim, his eyes fixated on Shirou's, a stony and serious gaze overtook the once joyous and carefree Stargazer. "Someone has stolen nine of the ten Rings of Solomon." The words were spoken so bluntly, yet to Merlin they carried the force of meteors.
While Shiro would not understand the true depth of the potential disaster that loomed with the Seal of Solomon in the hands of an outsider, Merlin's voice itself would echo the grave threat. "The terminology will escape you, but please bear with me. This is information that must be carried to Galahad. Like I said before, the Time Temple is a shard of the Throne; a mere portion of an entirely separate dimension. As someone who is no Surgebinder, I am able to move to and from Ars Paulina with this ring. A week ago, an intruder attempted to force their way into Ars Paulina. Something that I thought was normally impossible. Ars Paulina had been largely forgotten in Radiant history because the Seal of Solomon was hidden away. The attempt to brute force their way into the Time Temple failed...but their persistence had not. Moments after the disruption occurred, the entire Temple momentarily ceased to function as a Reality Marble. Even my knowledge fails me, a rare moment indeed..." He laughed and scratched the back of his head. In a time of dire crisis, the self-deprecating laugh at his own failure seemed to be the only comfort he could derive from himself given the circumstances. "To this day, and after countless hours of attempting to bring meaning to what I formerly thought of as impossible, I still only have one theory as to what happened. The Reality Marble itself, Ars Paulina, temporarily ceased to function because it was interfered with from the outside...from within the Greater Throne itself. It likely means, almost certainly, that the intruder is a Surgebinder themselves. But...even I have no knowledge of who this could possibly be. Only Galahad and his sister could perform such a feat, navigating the nigh infinite ethereal sea of Prana. Because Ars Paulina ceased to function...I was left in stasis in the Greater Throne. I can only imagine that in this defenseless time, the intruder stole nine of the ten rings. They were likely unable to find Ars Paulina. But the other nine...." By now, Shirou's body would have adjusted to the Prana in the Throne. He would be, unknown to himself, attuned to the Throne and Prana allowing his body to become a doorway to the Throne.So at this point in the training, Shirou's body has become attuned to the Throne. This enables you access to Surgebinder's basic passive skill. This skill allows Prana to exist in Shirou's body at all times, causing any foreign energy or chakra inserted into him to be transported to the Throne. This means illusions cannot take effect before they are transported as well. It is a potent passive ability. Additionally, it also becomes latent in all of your skills.
So of course you'll also be able to pick your Prana color. I'll leave that to you (see clan submission for details on colors depending on your faction, in your case Radiant). This passive coloration is also introduced into all of your techniques to have a passive cosmetic effect on them.
So now for the training portion of this post. Now that Shirou is attuned to the Throne, it will soon be possible for you to use the Era of Gods - our most basic technique. But before then, it is important to understand what Prana is and how it works. So, we'll start with a basic question. What even is Prana and how does it work?