Some guy on Reddit: "Sourcery is a special type of magic originating from 'The first garden' the domain of Astarte, godess of the source."
I thought it was a form of magic, but it isn't necessarily magic, there are warfare / huntsman source abilities for example.
You could argue that even the warfare source skills are magical somehow, or that source magic flows through the warrior as they completely overpower a character, or enables the archer to shoot a ton of arrows in quick succession.
If Source isn't magic, I don't know what it is. It's an ethereal substance that enables acts of great power.
