He’s using the mana in the air itself as fuel for his magic rather than having said magic as a skill. It’s basically him cutting down on mana usage. So using it as a skill consumes more mana but using it as magic itself consumes less mana because most of that mana comes from the mana in the air. It’s already simple enough to understand, but I’ll leave this explanation here in case someone is operating on 2 hours of sleep.
Hero of Light
He’s using the mana in the air itself as fuel for his magic rather than having said magic as a skill. It’s basically him cutting down on mana usage. So using it as a skill consumes more mana but using it as magic itself consumes less mana because most of that mana comes from the mana in the air. It’s already simple enough to understand, but I’ll leave this explanation here in case someone is operating on 2 hours of sleep.