Terrain Effect Magic (BD1)

Terrain Effect Magic (じぎょう影響魔法, Jigyou eikyou mahou) is a form of Caster Magic that allows the user to sense and manipulate ethernano veins found beneath the earth to completely change the nature of the environment they are in.

Overview
Terrain Effect Magic is a form of Caster Magic that allows the user to sense and manipulate ethernano veins found beneath to earth to completely change the nature of the environment they are in, including the force of gravity within said environment. Volcano's can become frozen tundras, Dark caverns can become grassy fields. Users accomplish this astonishing feat by harnessing the immense power of large veins of ethernano located deep beneath the crust of the earth. These veins of ethernano can be found all over Earthland, varying in size. The larger the vein the more power the user can wield. That being said, the absence of large ethernano veins in an area does not render this magic unusable, the user must simply substitute the needed ethernano with their own magical power. While all mages can theoretically sense these veins, users of this magic can sense them much easier and to a higher degree than those who do not. The effects of this magic are temporary, the environment returning to its original form the moment the user's influence over it is lost.

Users may also manipulate the environment in more ways than one at a time, able to increase or decrease the gravity while also maintaining a volcanic or icy environment. Oddly enough, users can also "turn" gravity so that it pushes opponents side to side or forwards to backwards, a true testament to the power at work within the casting of this magic. While this magic can indeed be used in one on one battles as an offensive magic, it is normally seen as a support magic, allowing the user to change the environment in a way that allows the user's partner to be at an advantage over a disadvantaged opponent. The exact range of this magic is currently unknown as the possible range depends largely on the size of the vein present. Though the magic tends to box itself in, the environmental effect being contained in a cube like state that is completely inescapable from within, neither magical or physical attacks damaging the container. Those viewing the magic from beyond the magic's range will be able to see through the walls, but will be unable to interact with those inside. Though, unlike from within, the magical container is vulnerable from the outside and able to be damaged or even broken by attacks.

Trivia
This article is the authors interpretation of this canon magic. The idea of "veins" of magic being able to manipulate the environment comes from "Dragons Veins" used in Fire Emblem Fates. Though, this magic does so on a much larger scale that those found in the game.
 * Permission to create this article was given by Per