Gods: Beings that use a concept, element, or something similar as their powers. For example: The Jotunn of Fire Surtr.
The strongest level a god can reach is the Universe level. (Powerful enough to rule a universe.)
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True Gods: Beings that are the incarnation of a concept, element, or something similar. For example: The One Above All.
The strongest level a True God can reach is the High Multiverse level. (Powerful enough to rule multiple multiverses.)
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Mana: The central energy source of the Omniverse. It comes in many shapes and forms (Chakra, Qi, Magic Power, etc.), but it is always the same energy deep within.
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