Eiro looked at the empty page in front of him. With a single thought, he could draw the magic circle on the page, or alter it just as quickly. It wasn't like the grimoire was actively helping him construct it, but it did increase his concentration to an extent. As if he was breathing, he was able to make use of all the different parts that would make up magic circles or chants, instead of having to 'remember' them.
In the end, this part didn't really make any direct difference, since Eiro was able to think at a speed similar to this anyway, but the creation of the magic circle happened just a lot more smoothly. It was like the moment that Eiro thought of the exact effect that he wanted, Eiro had already started creating it.
It was a nice feeling, and it was kind of like Eiro was able to create much more complex magic circles than he thought he would be able to.
