Al'taru

The Weave of Magic (explained in chapter 10 of the PHB)—more commonly known as Al’taru, or primordial spine, in this setting—provides some context for how magic works, even in a low magic setting like Efre Ousel. Al’taru is closely tied to the primordials as an interconnected force within the raw substance of creation itself.

The primordial spine has existed concurrently with the primordials since before the beginning of creation; the practice of magic is about manipulating that Al’taru. This practice has changed as societies change and as scholars contribute a growing field of knowledge—and sometimes that knowledge is lost forever.

Magic is not worshipped (like Mystra in Forgotten Realms), but it is treated with great reverence.