Nimbus Staff Blessing (level 13)

This staff has a special ranged spell attack with a range of 30 feet, and you add your Charisma modifier to its attack and damage rolls. It deals 2d8 bludgeoning damage plus CHA mod as a gust of magical wind batters the target. Being within 5ft. of a hostile creature does not impose disadvantage on this special ranged spell attack.

Variant Properties. This staff has 3 additional properties, activated when you meet the prerequisites for it:

(Prerequisite: 8th level) You gain a +2 bonus to attack and damage rolls with the staff.

(Prerequisite: 10th level) The first target hit by the staff on each of your turns takes an extra 1d6 cold, lightning, or thunder damage (your choice).

(Prerequisite: 13th level) While holding the staff, you have resistance to cold, lightning, or thunder damage (your choice). When you finish a long rest, you can change this resistance to a different one.