Dungeon Master's Guide 5th Edition

Staff of Wilting

Staff Magic weapon, Arcane Focus, Versatile (1d8) Rare (this item requires attunement) [Requires attunement by a cleric, druid, or warlock]

This staff has 3 charges and regains 1d3 expended charges daily at dawn.
The staff can be wielded as a magic quarterstaff. On a hit, it deals damage as a normal quarterstaff, and you can expend 1 charge to deal an extra 2d10 Necrotic damage to the target. In addition, the target must succeed on a DC 15 Constitution saving throw or have disadvantage for 1 Hour on any ability check or saving throw that uses Strength or Constitution.

Weight: 6lbs