Magic Items

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.

Longbow +2
Weapon (longbow), rare

You have a +2 bonus to attack and damage rolls made with this magic weapon.

Winter Wolf Cloak
Rare
This dark cloak is made of cured winter wolf hide. As an action, you can command the cloak to transform you into a winter wolf for up to 1 hour. The transformation otherwise functions as the polymorph spell, but you can use a bonus action to revert to your normal form.
Curse This cloak is cursed with the essence of a winter wolf, and becoming attuned to it extends the curse to you. Until the curse is broken with remove curse or similar magic, you are unwilling to part with the cloak, keeping it within reach at all times.

Shield of the Uven Rune
Wondrous item, very rare (requires attunement)

This shield is made from the scale of an ancient white dragon. It has a rune burned into its outward-facing side. A character who examines the rune and succeeds on a DC 20 Intelligence (History) check recognizes it as an uven (“enemy” in Giant) rune that confers great power.

While holding the shield, you benefit from the following properties:

Winter’s Friend. You are immune to cold damage.

Deadly Rebuke. Immediately after a creature hits you with a melee attack, you can use your reaction to deal 3d6 necrotic damage to that creature.

Bane. You can cast the bane spell from the shield (save DC 17). The spell does not require concentration and lasts for 1 minute. Once you cast the spell from the shield, you can’t do so again until you finish a short or long rest.

Gift of Vengeance. You can transfer the shield’s magic to a nonmagical weapon by tracing the uven rune on the weapon with one finger. The transfer takes 8 hours of work that requires the two items to be within 5 feet of each other. At the end, the shield is destroyed, and the rune is etched or burned into the chosen weapon. This weapon becomes a rare magic item that requires attunement.

It has the properties of a +1 weapon. The bonus increases to +3 when the weapon is used against one of the following creature types, chosen by you at the time of the magic weapon’s creation: aberrations, celestials, constructs, dragons, elementals, fey, fiends, giants, or undead.
This item is found in Waterdeep: Dungeon of the Mad Mage.

Animated Shield
Armor (shield), very rare (requires attunement)

While holding this shield, you can speak its command word as a bonus action to cause it to animate. The shield leaps into the air and hovers in your space to protect you as if you were wielding it, leaving your hands free. The shield remains animated for 1 minute, until you use a bonus action to end this effect, or until you are incapacitated or die, at which point the shield falls to the ground or into your hand if you have one free.

Wand of Polymorph
Wand, very rare (requires attunement by a spellcaster)

This wand has 7 charges. While holding it, you can use an action to expend 1 of its charges to cast the polymorph spell (save DC 15) from it.

The wand regains 1d6 + 1 expended charges daily at dawn. If you expend the wand’s last charge, roll a d20. On a 1, the wand crumbles into ashes and is destroyed.