Interesting. Mana is another term for the arcane energy that is woven throughout my world, like a fabric. There is not a particular goddess who is said to have created it. Priests and paladins gather their power from whatever force or deity they worship. All of these forces have some presence, and most likely exist, though not as a supreme god or goddess.

The 'gods' who made my world abandoned it shortly thereafter. I highly doubt they are worthy of worship, nor do they care.