Magic Items

Source: Baldur's Gate - Descent into Avernus

Weapon (warhammer), legendary (requites attunement)

Matalotok, the Frost Father, is an ancient hammer fashioned by Thyrm, the god of frost giants. The favored weapon of the demon lord Kostchtchie, Matalotok is frigid to the touch and wreathed in mist.

You are immune to cold damage while holding Matalotok. Whenever it deals damage to a creature, the hammer radiates a burst of intense cold in a 30-foot-radius sphere. Each creature in that area takes 10 (3d6) cold damage.

Manual of Bodily Health
Wondrous Item, very rare

This leather-bound tome smells of rich mahogany and contains health, fitness, and diet tips, as well as an impressive collection of varied recipes for every occasion. The name “Montague” has been written on the inside front cover, possibly indicating a previous owner. A description of this item can be found on page 180 of the Dungeon Master’s Guide.

Wondrous Item, common (requires attunement) Whenever you roll this six-sided die, you can control which number it rolls. This item can be found in Xanathar’s Guide to Everything.

Source: Bigby Presents - Glory of the Giants

Weapon (Longbow), Legendary (Requires Attunement)

This ivory longbow is inscribed with a prayer to the god Hiatea, the runes of which are entwined with gilded engravings of wheat stalks and deer antlers.

You gain a +3 bonus to attack and damage rolls made with this weapon. If you load no ammunition in the weapon, it produces its own, automatically creating one magic arrow when you pull back the string. The arrow created by the bow vanishes the instant after it hits or misses a target.

The bow has 8 charges for the following properties, which you can use while wielding the bow. The bow regains 1d4 + 1 charges daily at dawn.

Curative Arrow. When you take the Attack action using the bow, you can expend 1 charge to replace one of your attacks with a blazing arrow of curative magic, which automatically hits one creature you can see within 150 feet of you. The target can then immediately spend and roll one of its unspent Hit Dice and regain a number of hit points equal to the roll plus your Wisdom modifier (minimum of +1). If the target has no unspent Hit Dice remaining, nothing happens. You can use a curative arrow only once per turn.

Spellcasting. While holding the bow, you can use an action to expend 1 or more of its charges to cast one of the following spells from it (save DC 18): Create Food and Water (1 charge), Warding Bond (2 charges), Guardian of Faith (3 charges).

Javelin of Lightning
Weapon (javelin), uncommon
This javelin is a magic weapon. When you hurl it and speak its command word, it transforms into a bolt of lightning, forming a line 5 feet wide that extends out from you to a target within 120 feet. Each creature in the line excluding you and the target must make a DC 13 Dexterity saving throw, taking 4d6 lightning damage on a failed save, and half as much damage on a successful one. The lightning bolt turns back into a javelin when it reaches the target. Make a ranged weapon attack against the target. On a hit, the target takes damage from the javelin plus 4d6 lightning damage.

The javelin’s property can’t be used again until the next dawn. In the meantime, the javelin can still be used as a magic weapon.

Javelin of Lightning
Weapon (javelin), uncommon
This javelin is a magic weapon. When you hurl it and speak its command word, it transforms into a bolt of lightning, forming a line 5 feet wide that extends out from you to a target within 120 feet. Each creature in the line excluding you and the target must make a DC 13 Dexterity saving throw, taking 4d6 lightning damage on a failed save, and half as much damage on a successful one. The lightning bolt turns back into a javelin when it reaches the target. Make a ranged weapon attack against the target. On a hit, the target takes damage from the javelin plus 4d6 lightning damage.

The javelin’s property can’t be used again until the next dawn. In the meantime, the javelin can still be used as a magic weapon.

Hell Hound Cloak
Wondrous item, rare (requires attunement)
This dark cloak is made of cured hell hound hide. As an action, you can command the cloak to transform you into a hell hound 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 hell hound, 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.
The sixth time you use the cloak, and each time thereafter, you must make a DC 15 Charisma saving throw. On a failed save, the transformation lasts until dispelled or until you drop to 0 hit points, and you can’t willingly return to normal form. If you ever remain in hell hound form for 6 hours, the transformation becomes permanent and you lose your sense of self. All your statistics are then replaced by those of a hell hound. Thereafter, only remove curse or similar magic allows you to regain your identity and return to normal. If you remain in this permanent form for 6 days, only a wish spell can reverse the transformation.

This golden harp is sculpted in the image of the god Iallanis, depicted as a young cloud giant woman. When a creature comes within 5 feet of the harp, the instrument animates and is capable of speaking, singing, and playing by itself.

Whenever you attempt to attune to the harp, you must first make either a DC 15 Charisma (Performance) check or a DC 20 Charisma (Persuasion) check to convince the harp that you are worthy, attuning to the harp on a success. If you fail, you can't attempt to attune to the harp again until the next dawn. Once you have successfully attuned to the harp, the harp resizes to suit you.

Stalwart Song. Whenever you make a Charisma check while attuned to the harp, you can treat a roll of 9 or lower on the die as a 10.
Feast of Plenty. If you spend 10 minutes playing the harp, you can cast the heroes' feast spell from it. Once this property is used, it can't be used again until 1d10 + 10 days have passed.
Soothing Melody. As an action, you can use the harp to cast the calm emotions spell (save DC 19). When the spell is cast using the harp, its duration increases to 1 hour, provided you maintain concentration on the spell. This property can be used five times, and it regains all uses at dawn.
Sentience. The harp is a sentient, chaotic good object with an Intelligence of 13, a Wisdom of 15, and a Charisma of 20. It has hearing and darkvision to a range of 120 feet.
The harp can speak, read, and understand Common and Giant. It can also communicate telepathically with the creature attuned to it.

The harp has a dramatic and pompous personality, taking extreme pride in the quality of music produced from its strings. If the harp is shorter than 6 feet tall, it bemoans its height.

The hilt of this shortsword
is decorated with images of
frolicking harengon and the
blade is constructed of a
shimmering dark purple
crystal. When wielded, you
gain a +2 bonus to initiative
if you’re not incapacitated.
This item functions as a +3
weapon (shortsword) (see
the Dungeon Master’s Guide).