Percussor Omnia

Percussor Omnia (キラーすべて, Kirā Subete) is an incredibly powerful and dangerous Magic created by Ezra Akiyama, the Magus Primordial. It's potential has been recognised as such that it led to the Magic Council classifying it as an Extinction-level threat, as well as an Ancient Spell and Lost Magic, if it were to ever be used for malicious intent.

Description
This Magic works by its caster "linking" themselves to the planet itself, with streamers of energy moving between them and the ground, changing colour until they solidify, signalling a secured link. Then, in a method akin to Take Over, the caster generates their power through the link and into the planet, while pushing the planet's power into their own body and altering its "form" to take that of the caster's own, effectively granting them a (temporary) nigh-infinite source of Magic Power, however the more power the caster uses with this, the more they risk using too much and utterly overloading and destroying their body in return, leading to disaster.

This Magic also seems to be able to be used in conjunction with God Soul, similar to the apparent link between Territory and Yakuma Eighteen War Gods Magic (MSE), as its only user was seen activating it and then proceeding to do the same with his God Soul Magic.

Consequences
If the user happens to take on too much power for their body to handle, it will consume and destroy them entirely, and when that happens, because the link was not safely sealed, the channelled "river of power" will explode into the world, causing a cataclysmic event that could spell the end of an entire continent if enough power was being shared.

Trivia

 * This was approved by Per!