Most assume dragons are an infinite source of mana, and to a point, they are. However, it isn't like that.
They are more of an infinite storage of mana. While other species that utilize mana gather it from the environment and turn it into their own, dragons produce it from within. Their heart is a generator, and it is much faster and more potent than the ways of the others, where mana is absorbed from the environment through their skin or through breathing.
A dragon's heart produces mana, but it can be damaged if it is forced beyond its capabilities. The strongest strength of a dragon is their vessel.
They can hold an infinite amount of mana; there is no limit to how much they can contain. Unlike everyone else who has a limit on how much mana they contain, they have none.
