The Ancient Intelligence

Source: Compendium of Craft and Creation

You have made a pact of sorts with an intelligence that defies normal understanding; its aims are mysterious and often incomprehensible. This being could be an artificial intelligence of some lost race of ancients with fabulous technology, perhaps a high ranking mechanical overmind.
They could even be an ancient lost rogue one, perhaps an Inventor of another era whose last act was to upload themselves in an incorporeal form, or perhaps it something more alien, the ancient navigation system of an otherworldly ship that has gained sentience.
The possibilities are endless, but whatever its nature, it can grant you sufficiently advanced knowledge that for all intents and purposes is fabulous magical power.