Staff of Frost
Staff (arcane or druidic focus), very rare (requires attunement by a druid, sorcerer, warlock, or wizard)

You have resistance to cold damage while you hold this staff.

The staff has 10 charges. While holding it, you can use an action to expend 1 or more of its charges to cast one of the following spells from it, using your spell save DC: cone of cold (5 charges), fog cloud (1 charge), ice storm (4 charges), or wall of ice (4 charges).

The staff regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff turns to water and is destroyed.

Versatile. This weapon can be used with one or two hands. A damage value in parentheses appears with the property—the damage when the weapon is used with two hands to make a melee attack.

Damage: 1d6 (1d8)
Damage Type: Bludgeoning
Properties: Versatile
Weight: 4