Infusion

Infusion is the principle by which Mana is introduced in an environment containing or enabling the use of an element, thereby enabling its manipulation. The reach and intensity of the infusion follows the infuser's will and mastery over their own power.

Manifestation

Infusion can be seen with the naked eye thanks to the strange hue that surrounds an infused object or area. It is also felt according to the principle of Mana Perception which everyone possesses. Great feats of infusion or preparations for an infusion are obvious and easy to predict.

Principles

Direct contact with the caster or an infused element in contact with the caster is required.

Each person's mana seems to be unique. Only the individual whose personal mana currently infuses an element can manipulate it.

One can override someone's infusion with their own mana, though the process is costlier depending on the infused mana already present. It is also slow and may not take hold in time.

Elements

Earth

The infusion propagates through the ground. A process that gets slowed down when the density of the material gets in the way, requiring more mana being infused to affect it properly.

Air

The infusion spreads through the air surrounding the caster. It is usually a slow process. The cost of infusion hinges on the volume of air involved, and the propensity of air to propagate makes the upkeep exponentially greater the longer the infusion takes.

Water

Water is infused with mana. Easier to infuse it with containers. The exact purity of water seems to have an impact on the efficiency of the cast, and the purity limit where no infusion is possible is easy to reach. In other words, muddy water, blood, and muscles are extremelly difficult if not impossible to infuse.

Fire

The strangest process of infusion. It requires particles in the air, specific circumstances, and a rapid infusion process which exhausts mana quickly but with impressive results.

Thunder

Infusion in the case of thunder magic is by far the more complex out of every known elements. In this case it can be applied to the air and specific materials. Not everything seem able to channel thunder and infusing one's mana into inadapted material seems to simply fails. Steel, copper, air, and flesh do seem to propagate it correctly.

Practical use

Spellcasting

Infusion is the basis through which every elemental modification can occur. If there is no infused element, the caster cannot produce a visible result by manifesting their will upon it.

Interference

As mentionned, each individual's mana is unique. As such, simply infusing a large area without interacting with it further can be enough to stop another caster from infusing it themselves. This solution can be used to hostiles from manipulating the infused elements unless they exhaust a greater amount of mana to bypass the interference. It is possible to infuse elements in sync with allied casters in order to interfere with a larger area.

Localization

The existence of Mana being an obvious pre-requisite, Infusion is exclusive to Orbido and whatever places are under the purview of its alleged makers, as it wasn't observed nor recorded about in the Old World if one ignores the claims of witchcraft and godly phenomenoms.
Infusion can be accomplished by people but also by beasts who seem to have an instinctive mastery over their respective elements. So infusions are observed and felt on an almost daily basis even in societies that do not employ Magic regurlarly.

Type

Metaphysical, Elemental