Black Crusade (2011), p166-167 — Plague Weapons

Each of these corroded iron blades is coated with rust and numerous diseases, the better to spread Father Nurgle's blessing across the galaxy. Only those pure in his sight such as his Plague Marines are granted such a weapon, and any lesser being suffering even the slightest wound is gifted with one of his innumerable creations such as Nurgle's Rot or the Weeping Pox. The Toxic Quality on this weapon inflicts 1d5 Toughness Damage in addition to 1d10 damage. This is a one-handed melee weapon.