The cabin had seemed like the most appropriate place to have the contract, and the rune it promised, applied. It belonged entirely to the Magus, and, as such, was the logical choice. A Magus was at his strongest when in spaces that belonged to them, had absorbed their power over time and come to belong to them in a way unique to those who practiced the aetheric arts. Rivin himself had been careful not to make any major contracts or do anything else inside Sivan's tower that might cause the space to begin attaching itself to him. That space was owned by another, and while it was difficult to think of Sivan as a Magus in the same way he thought of Aurin as one, there was no denying that the elf had earned the space that belonged to him. It would have been repaying kindness with discourtesy to usurp any of it, even if he did not have his own space to claim yet. Rivin was yet no Magus, so, there was time to find where would be his.
Sivan had toiled diligently on the agreed upon contract, as both Aurin and Rivin had on working out the specifics for the elf to translate into Scrivening.
Though Rivin had wanted to wrap their compact in the language of the fantasy epics he had grown up reading it was, for all intents and purposes, a contract of apprenticeship. He was agreeing to work for Aurin while learning from him for a specified amount of time in exchange for being given the instruction and the tools (the Rune of Traversion) to accomplish his education.
To ensure the upholding of Aurin's side of the contract it would not fully take hold until they had applied the rune to the Lysanrin's soul. To ensure the upholding of Rivin's side the Scrivening that Sivan would write onto Rivin's body would enable the Traversion Rune to give Aurin the ability to know where he was at all times, to travel to him between their shared runes, or to compel to him come to wherever Aurin was. Once the contract was considered complete Aurin could sever the Scrivened additions to the Rune to remove these abilities.
There were other parts of the contract that included the few caveats to Aurin's control (That he never lock Rivin in a small space. That he never punish him with a closed fist. That he never force him to travel to Zaichaer or The Imperium against his will. That he never pass the contract to another.), as well as granting Aurin permission to discipline his pupil as he otherwise saw fit. In the extreme case that Rivin refused to obey to the point of the contract being considered broken, Aurin had the ability to 'turn off' Rivin's Traversion rune altogether until such time as he felt his apprentice had returned to obedience.
It had been surprisingly easy to come to their agreement, as they both seemed to want the same things from it. Rivin's explanations had sometimes been overly colorful, and other times overly academic, but once that was gotten over there had been no real disagreements about any of it. The magus and his soon-to-be apprentice might come from very different backgrounds in almost every way possible, but their minds seemed to spin to the same rhythm. This had only firmed Rivin's desire to enter into the apprenticeship legally. Such a contract as they were making was a legal document, and, though the reality of it would be Scrivened onto his form there were also three parchment copies of the details. One for himself, one for Aurin, and a third to be kept with the Guild of Coins in case there was ever a dispute. Sivan and Aurin separately had suggested these precautions and it spoke well of them both that they were trying to ensure he had what protections were available.
The Lysanrin could not read Scrivening, nor had he any runes that allowed him to suss out the magic inside the minor runes, but he had seen the practice version that Sivan had done in preparation and had been instantly drawn to it. The symbols of the script had looked foreign in a way that somehow looked fundamentally like magic to Rivin's eyes. If, as a child, he had been offered this he would have accepted instantly, without asking a single question as to what the words actually meant. He was an adult now, but it still had been a struggle not to ask Sivan to begin sooner than the elf felt ready.
He knew patience though, and far from wanted his friend to feel hurried, so he had offered thanks and appreciation, and waited. Now it was the day and he had not let himself be hurried either. The bath he had taken in the hot springs had had a ritual feel to it, even alone, and taken all due time and care with the meditation Sivan had suggested to properly prepare himself for the Scrivening and receiving the rune. When he had felt that he was ready he had made his way to the cottage. There hadn't been long to wait, thankfully, and now Sivan was there with him.
"I am." He nodded to the question, looking at the large fire Aurin must have laid (or had a servant lay) in the hearth. To the second question he shook his head, answering,
"I am not shy, for the Magus."
Pausing in the act of beginning to remove his clothing he moved closer to Sivan with the odd, graceful little skip-step that he did when he wasn't thinking about what other people might think of him. Reaching down he took the elf's hand in his and held it, a gesture more intimate for how comfortably casual it was.
"I am not nervous. Not at all. All will be well. You have put all your effort into this and you are an exceptional mage." He stayed until Sivan both met his eyes and implied in word or gesture that they were in accord. Then he quickly and efficiently removed his clothing without any art to it but that which came from what grace the gods had granted him. Once it was folded and put aside he stood, still and unabashed and asked,
"Where would be easiest for you? The table?" It was small but large enough to support him and a good height that if he lay upon it either Sivan or Aurin could work on his skin. The Scrivening and Rune were both going on his back, it had been discussed. His Summoning rune was between his shoulder blades, so high on his back that it just avoided being partly on his neck. The Traversion would go below it with the lesser runes flowing out to either side and below it.