Magic

"According to scientists, before the Convergence it just... didn't exist. There was no such thing as magic in our world. We had many unnatural forces and primordial concepts of creation, but it was not until after the collision of the worlds that mana began appearing. Some say that the force just... willed itself into existence"
-Camille Maxime to Khaliah 
Magic, also called mana and praxis, is the term used for the effect caused by magicules, unstable elementary particles that cluster around living organisms. Magicules form around areas with unstable realities like lesser and greater rifts, as well as in the bodies of magically adept objects, creatures, and people. Mana can be manipulated via electric signals like those found in the brains of people who are magically adept. 
The inherent instability of mana particles can be harnessed for hacking certain aspects of reality, allowing access to previously theoretical concepts like above-light speed travel, wormholes, and interdimensional portals. According to my research, magic didn't exist in the Earth reality before the Convergence, meaning either that the instability from the Cosmos and Annaad realities colliding caused the creation of magic on Earth, or that mana was brought with the people and things that spilled into the world during the Convergence.
Mana in its raw form is known as arcane magic. By changing the energy levels of the particle, it changes type and vibration intensity. Different forms of mana can cancel each other out if their energy levels are opposite from one another on the Vibration Scale. More energized forms of magic tend to have the upper hand, but lower ones can cancel out the other if there are more low intensity mana particles, which there commonly are due to low intensity mana being easier to produce and control in large amounts.
For example, dark magic has a very low vibration intensity, and so divine magic can cancel out dark magic due to it having more energy, but due to the high cost of large amounts of divine magicules it balances out with the large amount of dark magic particles, which can be easily produced.
Magicules are registered in a person in the form of Pieces Per Soul (PPS), with 1 equaling 100 quadrillion pieces.