Mana

Mana is the energy of the mind and the natural energy spellcasting, being inherently tied to magic. A mbient  m ana surrounds everyone and everything in Elardia. However, 1 person in 50 has inherent mana reserves, these people are called wizards and mages.

Mana Use of Spells
In general, most of the mana used for a spell is drawn from nearby ambient mana, the caster just provides a tiny amount to get the spell started. Skilled caster can even cast some spells using none of their own mana, just the ambient mana around them, though the resulting spell won't be as powerful. The amount of mana need for a spell is often flexible, usually there's the amount of mana need to just cast the basic version of the spell, but beyond that you can pump more mana into a spell to power it up.

Combat Spellcasting
For combat spells, the immediate nature of them means there's less time to draw on ambient mana so, they're typically inefficient and draw a larger portion of their power from the caster than normal spells.

Other energy sources
While mana is inherently tied to magic, it is not the only power source that can be used for spells. Other forms of energy innate to living beings can be used to power spells, but one must learn how to do this as they are not the intrinsic energy of magic. There are 3 other power sources one can draw on, so including mana, there are a total of 4 possible power source for spells.