Jace studies Kaede. Curiously rather than suspiciously, now.
"We who can bridge universes naturally are so rare, and the magic to bridge them technologically so difficult, that many worlds think themselves alone. Worlds with magic so strange as yours, such that someone could see mana naturally yet not know of leylines, are much rarer.
All, or perhaps almost all, magic is ultimately powered by mana. Mana flows through all earth and through all living things, but principally along certain channels in the ground we call 'leylines'; most magic throughout the multiverse is powered by mana from leylines. A leyline geologist studies the ways in which leylines and the physical structures of the earth interact with each other, which is useful in helping those who cannot see leylines find them. A year here lasts thee hundred and seventy days.
I'm not sure which aspects of my magic are and are not familiar to you. My way of thinking and of seeing the world aligns with blue mana. This means more or less that I yearn to understand things and act on that desire, that I think before I act and act on those thoughts, that I try not to allow emotion cloud those thoughts, that I prefer progress to blind traditionalism, and various other things along that vein. You are, I think, similarly attuned.
This attunement causes the places where blue mana pools to call to me," he gestures in the direction of the sound of running water "and when I find them I establish a spiritual connection to the places they flow through, and find where their mana pools. This allows me to, through a combination of words, gestures and thoughts, tap that mana and channel it into spells. For example..."
and he describes how he would cast a simple spell for thinking more quickly and calmly and why it would work.