The shield of Sanguinius, as it was known amongst Balthiel’s order, was a psychic barrier, a physical manifestation of a Librarian’s will. He knew of no one who had ever attempted to manifest the shield on the scale he prepared to. Drawing on such power was dangerous. His soul would blaze in the warp, a refulgent feast for the denizens of that daemon realm. Should he succumb to their seditious whispering, should the foul powers take command of his flesh, Jophiel would end him.