The Tome of Blood, a supplement for Black Crusade, is the second of four books delving into the darkest secrets of the Ruinous Powers. It is devoted to Khorne, the Lord of Skulls, perhaps mightiest of the Chaos Gods, and his powerful minions who carry his blood-drenched banner across the worlds of the Screaming Vortex. Within its pages, Heretics gain terrible new armaments and weapons to wage war, new devices to carry their wrath across the battlefield, and more to aid them in their struggles against the hated Imperium!