41st of Frost, Year 119
"Beyond the initial concepts of Transposition, Ebon Knight, there are certain detractors from the magic known as Limits. These are, really, what separate us from the Gods in our control over spatial reality; the first of these things is Time." The woman opened a portal before her, doing so quickly. A single wave of the hand was all it took, and the portal was large enough for a man of Riven's size to step through. Taelian stared into the depths of the portal with relative awe, intrigued by the door. He could see through to the other side -- it was a meadow, perhaps not far from here. The stalks were beige-colored like wheat, but he did not imagine they were even particularly alive. Dormant, perhaps, from the season of Frost.
"This is what people conventionally imagine when they think of Portals; in reality, it is a fairly advanced technique. Like all of them, however, it is limited by Time. To maintain a portal costs aether; too many will quickly drain on a mage, particularly an unskilled one. Unstable ones drain more-so; yours, as a novice, are unstable at best if they even form. You will find them to be rather taxing as you perform them," the woman further explained. Taelian felt that he followed well; it was a simple enough concept.
"There are three more Limits, but I will only go over the next one before I ask you to cast your first true portal, via an ability. This next Limit is known as 'Distance', and like Time it is a fairly self-explanatory one." Eloise paused, and closed the portal before her, perhaps due to Time: she did not wish to needlessly waste any more of her reserves. Closing it appeared as simple as opening it did; her eyes shut for but a moment and her temples tensed, appearing to focus on something. And then, it collapsed upon itself, and space was restored to its normal composition.
She smiled faintly. "That portal was perhaps a hundred miles south of here, away," Eloise stated. "Even doing so, it took from me a significant reserve of aether. There is the energy already required to create a portal, and it increases exponentially based upon distance. At your level, you scarcely have to worry of distance save for the fact that you are limited by it to an extreme: you cannot project portals very far at all. Once you get to my level, though... you can walk between nations in a single step. Or so we would like to believe. Again, it is a taxing process."
"Why is it more draining?" the Ebon Knight inquired.
Eloise's right brow quirked, and the smile upon her lip seemed to quickly curve before cooling. "I'm glad you asked," the Umpire replied. "Nodes, really. And Streams. And the sheer difficulty of asserting mastery over space that is a thousand miles away from you. With great distance comes the need for precision, but more accurately more aether thrown at it all to force everything into place. A proper substitute for precision, perhaps; only an Elder can really travel long distances with ease."
A loaded word, he imagined. He was uncertain of what an Elder was, though he imagined it may open a can of proverbial worms to inquire. He decided to do so, anyway.