Sacrificial Magic is an immoral form of witchcraft used to channel power from offerings. Depending on who or what is sacrificed, the witch has the potential to be not only mystically enhanced, but also physically stronger.
Sacrificial magic does have some similarities to expression, as it can be used to channel the magic that is held within the practitioner's offerings. Seemingly, sacrificing a human who possesses no magical abilities would be no benefit to a witch seeking to gain more power. Despite this notation, said witches have been known to sacrifice regular animals, such as snakes, goats, and birds, to achieve certain spells. However, if a witch practicing sacrificial magic sacrifices a supernatural being, such as a vampire, a werewolf, or a witch, they can channel said supernatural abilities, like additional strength, speed, and healing abilities,or enhancing their own magical power. Sacrificial magic is also sensitive in its formula when used to make physical symbols for barrier spells or wards in order to protect their offerings, and, if disrupted by another magical component, then the workings of this magic and the spell can be halted.