Magic Items

This milk-white horn is fashioned from the tine of a great stag's antler. A vremyonni enchanted it that it may grant flight to berserkers as they charge into the battle. Despite its size, it creates the sound of a bellowing war horn when blown.

Staff, rare (requires attunement by a Druid)
“A staff shaped and weaved from the scales of an amethyst dragon and encrusted with sea gemstones ”
This staff can be wielded as a magic quarterstaff that grants a +2 bonus to attack and damage rolls made with it. While holding it, you have a +2 bonus to spell attack rolls.

The staff has 10 charges for the following properties. It regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff loses its properties and becomes a nonmagical quarterstaff.

Spells

You can use an action to expend 1 or more of the staff's charges to cast one of the following spells from it, using your spell save DC:

animal friendship (1 charge)
awaken (5 charges)
barkskin (2 charges)
locate animals or plants (2 charges)
speak with animals (1 charge)
speak with plants (3 charges)
wall of thorns (6 charges).
You can also use an action to cast the pass without trace spell from the staff without using any charges.

Tree Form. You can use an action to plant one end of the staff in fertile earth and expend 1 charge to transform the staff into a healthy tree. The tree is 60 feet tall and has a 5-foot-diameter trunk, and its branches at the top spread out in a 20-foot radius. The tree appears ordinary but radiates a faint aura of transmutation magic if targeted by detect magic. While touching the tree and using another action to speak its command word, you return the staff to its normal form. Any creature in the tree falls when it reverts to a staff.

Guardian. The item roars a warnings to its bearer, granting a +2 bonus to initiative if the bearer isn’t incapacitated.

Ring of Fire Resistance [rare, attunement]
This ring holds a red crystal set in a silver band carved to look like a ring of flames. It was formed from the Heart of the Tower after your adventures in the village of Rymdyl. The life and magic of mage and a fire elemental have formed this item.
You have fire resistance while wearing this ring. In addition, it has the Temperate minor property, which means you suffer no harm from temperatures as cold as -20 degrees Fahrenheit or as warm as 120 degrees Fahrenheit while it is equipped.

This longsword has a cross-guard shaped like a tree branch and an oak tree embossed on its pommel. You gain a +2 bonus to attack and damage rolls made with this magical longsword. In addition, the sword has the Gleaming minor property and never gets dirty.

Weapon (Whip), Rare

The handle knot is inscribed with an old Raumviran saying. Translated, it reads: "Kindle not the flames of strife, let peace prevail through all life." The handle of this dark leather whip bears the fire rune, and embers dance around the whip’s tail.

You gain a +1 bonus to attack and damage rolls made with this weapon, and on a hit, the whip deals an extra 1d6 fire damage. When you score a critical hit with an attack using this whip, the target also has the restrained condition until the start of your next turn, as fiery bands lash around the target.

Invoking the Rune. When you make an attack with the whip and hit, you can use your reaction to invoke the whip’s rune. Doing so increases the extra fire damage dealt by the whip to 2d6.

Once the rune has been invoked, it can’t be invoked again until the next dawn.

Source: The Book of Many Things

Staff, rare (requires attunement by a Cleric, Druid, or Wizard)

Thalazar Sunbane's staff, Solbane, is crafted from dark, polished wood intricately carved with glowing runes and inlaid with golden veins. Veins of sunstone run through this wooden staff, adding to it's radiant allure. The head features a large, pulsing sunstone surrounded by translucent solar flares and dark metal tendrils, with hanging charms and embedded gems highlighting its blend of solar brilliance and necromantic power.

Veins of sunstone run through this wooden staff. This staff can be wielded as a magic quarterstaff that grants a +1 bonus to attack and damage rolls made with it. When you hit with an attack roll using this staff, the target takes an extra 1d8 fire damage.

Solar Focus. You can use the staff as a spellcasting focus. While holding the staff, you can reroll a number of damage dice up to your proficiency bonus when you use a spell slot to cast a spell that deals fire or radiant damage. You must use the new rolls. Once this property is used, it can’t be used again until the next dawn.

Sunny Glow. As a bonus action, you can cause the staff to glow with sunlight. While glowing, the staff sheds bright light in a 15-foot radius and dim light for an additional 15 feet. The light lasts until you use another bonus action to extinguish it.

This black leather apron is perpetually covered by blood, even after being washed off. You gain the following benefits while wearing the apron:

Once per turn when you roll damage for a melee attack with a weapon, you can reroll the weapon’s damage dice. If you do so, you must use the second total.
Your weapon attacks that deal slashing damage score a critical hit on a roll of 19 or 20 on the d20.

The limb tips of this magic bow are shaped like a dragon’s wings, and the weapon is infused with the essence of a chromatic, gem, or metallic dragon’s breath. When you hit with an attack roll using this magic bow, the target takes an extra 1d6 damage of the same type as the breath infused in the bow—acid, cold, fire, force, lightning, necrotic, poison, psychic, radiant, or thunder.

If you load no ammunition in the weapon, it produces its own, automatically creating one piece of magic ammunition when you pull back the string. The ammunition created by the bow vanishes the instant after it hits or misses a target.

Wondrous item, rare (requires attunement)
While wearing this cloak, you have Advantage on Dexterity (Stealth) checks. In an area of Dim Light or Darkness, you can grip the edges of the cloak and use it to gain a Fly Speed of 40 feet. If you ever fail to grip the cloak’s edges while flying in this way, or if you are no longer in Dim Light or Darkness, you lose this Fly Speed.

While wearing the cloak in an area of Dim Light or Darkness, you can cast Polymorph on yourself, shape-shifting into a Bat. While in that form, you retain your Intelligence, Wisdom, and Charisma scores. The cloak can’t be used this way again until the next dawn.

The fabric of this cloak flows through your hands like smoke rising from a fire, fed by unseen winds. When you use this cloak, the shape you assume is similarly smoke-like and appears to be made of shadow.

Weapon (greatsword), Rare (requires attunement)

This magic sword’s blade is fashioned from a horn or spine from a crystal dragon. When you hit with an attack roll using this sword, the target takes an extra 1d8 radiant damage.

The sword has 3 charges and regains 1d3 expended charges daily at dawn. When you hit a creature with an attack roll using the sword, you can expend 1 charge to regain a number of hit points equal to the extra radiant damage the sword dealt.

While you’re holding the sword, you can use a bonus action to cause it to shed bright light in a 30-foot radius and dim light for an additional 30 feet, to cause it to shed dim light in a 10-foot radius, or to douse the light.

This item is from Fizban’s Treasury of Dragons.