Ultimately, there is only one mantra and it forms the universe as we know it. Breath is our primary magic system and a fundamental axiom of reality.
One of the oldest magic systems known. Spells are spirits that you make pacts with to produce specific effects.
The power to creating objects and creatures of power. A scientific sort of magic, but perhaps the oldest magic. Subtly powerful, but difficult to master.
A list of miscellaneous house rules for the Loke setting. Just little quality-of-life things mostly.