In Extremis Quick Start

In Extremis is a tabletop roleplaying game designed for 2-6 players, about fighting back the man using necromancy, that uses the LUMEN system by Spencer Campbell. Inspired by The Locked Tomb trilogy, players take on the role of exceptionally powerful witches who use their mastery of life, death, and the human condition to keep them and their own safe from other planetary invaders who want to steal their land. As a Necromancer, you are one of a handful of hideously powerful death witches that protect the planet Hecate, the final holdout for The Coven, from the ever encroaching holy war of the Corvus Dominion. Seeking both answers for why the Necromancers use this heretical magic, and seeking minerals from the core of Hecate; the Corvus Dominion will stop at nothing to destroy these witches. Source: The Developer Website.