Mana (ma-nah)

Mana (also referred to as Eythniim {ethereal mist}, kai, ki, and shan'melk) is a natural, seemingly omnipresent, invisible energy source. It flows in the air and throughout all matter. All living beings possess an inner reservoir of mana. Mana is the energy with which all forms of magic are fueled.
Many arcanists believe there to be an infinite amount of mana.