Staff of the Batrachian

Wondrous item, very rare (requires attunement by a cleric, druid, or warlock who is a follower of Tsogatha)

This quarterstaff-length rod appears as a grotesque amalgamation of toads, tadpoles, and less savory things. It radiates evil if detected for. It is effectively a staff of withering.

Curse. Alas, if an unbeliever holds the staff for even a moment, the touch of Tsathogga is upon them. The bearer of the staff contracts mummy rot with no saving throw (it even effects paladins)! A character immediately renouncing the staff after the disease manifests may roll a DC 16 Constitution saving throw to avoid further harm. A non-believer who keeps the staff, or one who discards it and fails the saving throw, is affected as if having drunk an elixir of all-seeing doom. Wrapping the staff in blessed or holy water-soaked cloth grants resistance for 24 hours, but not a minute more.