It is not just raw power tha tmakes Silence such a fearsome weapon. A plague Daemon dwells within the censer that tops its haft.This entity’s fell power renders the slightest nick from the blade lethally poisonous. It also infests the leprous smog that billows in trails behind each swing of the scythe,rendering it anathema. Metal rusts and flesh rots at its mere touch, reducing the enemy to putrid ruin in moments.

Deathguard codex