You are not merely a Lightbearer, but are instead a physical embodiment of the Light itself. You no longer require a Ghost to fuel your powers and can instead generate Light in vast quantities without limit. Should you wish, you may take on the form of a moon-sized sphere of neutronium and electroweak matter that is nigh indestructible.
Like the Traveler, the paracausal power that flows from you is one of pure potential that, if unrestrained, can cause pearlescent flora to bloom in its wake. Using this power, you can reach into alternate timelines to draw forth knowledge or material, create almost anything you can imagine out of matter or Light, and influence the physical world to augment the living or resurrect the long dead. Should you wish it, you can terraform whole planets with the Light—turning toxic, lifeless balls of rock into flourishing garden worlds. You could even use this power to create singularities containing their own fully formed universes within.
As a paracausal entity, you are utterly impossible to simulate, and your existence itself is protected by the Light. No act of temporal manipulation will ever be able to affect you, and no compulsion of fate will ever limit you. Even ontological weapons cannot negate your existence which is entirely self-sustained by the Light. Unlike lesser wielders of the Light, your power can never be truly taken from you, for the very act of taking itself is antithetical to the power that you now represent. On the other hand, by temporarily sacrificing a part of your power, you can create Ghosts to seek out worthy individuals according to your criteria to become Lightbearers.