Mana is a energy that magic powers and feeds from. No one really knows where Mana comes from, or even if it is infinite. However several well known magic users have tried to harness it, namely Malphit Doom a well known and vilely evil mage. Also, Thepador Croggswell a well known Magic user from southern Amaria. Mana is pulled from what many see as thin air, however it actually many feel comes from the literal Strands of Magic that weave throughout the known world.