Blood Magic

The Blood Magic mod adds a special magic system to Minecraft. New features, new weapons, new armor. By sacrificing mobs (or engaging in masochism) you gain energy that can be spent on creating powerful things.

A very interesting and extensive mod on the subject of black magic, and the news contains a Russian review that will help you easily master this mod.

Mod adds game mechanics:
rituals summoning demons Demonic Runes demonic things sacrifices Alchemy