Staff of Withering

Staff, rare (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.

In these lists

Rare magic items
Staffs

Questions

Does the Staff of Withering require attunement?

Yes: it requires attunement by a cleric, druid, or warlock.

How rare is the Staff of Withering?

It is a rare staff.