Magic Items

Weapon (shortsword), rare
You gain a +1 bonus to attack and damage rolls made with this magic weapon.
When you hit a giant with it, the giant takes an extra 2d6 damage of the weapon’s type and must succeed on a DC 15 Strength saving throw or fall prone. For the purpose of this weapon, “giant” refers to any creature with the giant type, including ettins and trolls.
The sword’s name (“Longtooth”) is engraved into the blade in Gnomish.

Wondrous item, rare
This object appears as a wooden box that measures 12 inches long, 6 inches wide, and 6 inches deep. It weighs 4 pounds and floats. It can be opened to store items inside. This item also has three command words, each requiring you to use an action to speak it.
One command word causes the box to unfold into a boat 10 feet long, 4 feet wide, and 2 feet deep. The boat has one pair of oars, an anchor, a mast, and a lateen sail. The boat can hold up to four Medium creatures comfortably.
The second command word causes the box to unfold into a ship 24 feet long, 8 feet wide, and 6 feet deep. The ship has a deck, rowing seats, five sets of oars, a steering oar, an anchor, a deck cabin, and a mast with a square sail. The ship can hold fifteen Medium creatures comfortably.
When the box becomes a vessel, its weight becomes that of a normal vessel its size, and anything that was stored in the box remains in the boat.
The third command word causes the folding boat to fold back into a box, provided that no creatures are aboard. Any objects in the vessel that can’t fit inside the box remain outside the box as it folds. Any objects in the vessel that can fit inside the box do so.

Weapon (longsword), rare (requires attunement) You can use a bonus action to speak this magic sword’s command word, causing flames to erupt from the blade. These flames shed bright light in a 40-foot radius and dim light for an additional 40 feet. While the sword is ablaze, it deals an extra 2d6 fire damage to any target it hits. The flames last until you use a bonus action to speak the command word again or until you drop or sheathe the sword.

Wondrous item, uncommon
These crystal lenses fit over the eyes. While wearing them, you can see much better than normal out to a range of 1 foot. You have advantage on Intelligence (Investigation) checks that rely on sight while searching an area or studying an object within that range.

Weapon (Warhammer), Very Rare (Requires Attunement by a Dwarf or a Creature Attuned to a Belt of Dwarvenkind)
You gain a +3 bonus to attack rolls and damage rolls made with this magic weapon. It has the Thrown property with a normal range of 20 feet and a long range of 60 feet. When you hit with a ranged attack using this weapon, it deals an extra 1d8 Force damage, or an extra 2d8 Force damage if the target is a Giant. Immediately after hitting or missing, the weapon flies back to your hand.

Armor (Plate Armor), Very Rare

While wearing this armor, you gain a +2 bonus to Armor Class. In addition, if an effect moves you against your will along the ground, you can take a Reaction to reduce the distance you are moved by up to 10 feet.

Armor (Half Plate Armor), Very Rare
While wearing this armor, you gain a +2 bonus to Armor Class. In addition, if an effect moves you against your will along the ground, you can take a Reaction to reduce the distance you are moved by up to 10 feet.

Source: Xanathar's Guide to Everything
Wondrous item, common
This fearsome steel helm makes your eyes glow red while you wear it.
Minor Property Language: Thayan

Armor (Any Heavy Armor), Rare (Requires Attunement)
This magic armor appears as a pot of bubbling black ichor. When you attune to it, the ichor adheres to and contours to your skin, and the pot disappears. The armor can be worn under normal clothes, and it doesn’t impede bodily functions. Once you put it on, it can’t be removed unless you choose to do so or you die, at which point the pot reappears and the ichor flows back into it.
While wearing the armor, you have resistance to poison damage. The armor also doesn’t impose disadvantage on Dexterity (Stealth) checks.

Source: Dungeon Master's Guide
Wondrous item, uncommon
This box contains a set of parchment cards. A full deck has 34 cards. A deck found as treasure is usually missing 1d20 - 1 cards.
The magic of the deck functions only if cards are drawn at random (you can use an altered deck of playing cards to simulate the deck). You can use an action to draw a card at random from the deck and throw it to the ground at a point within 30 feet of you.
An illusion of one or more creatures forms over the thrown card and remains until dispelled. An illusory creature appears real, of the appropriate size, and behaves as if it were a real creature (as presented in the Monster Manual), except that it can do no harm. While you are within 120 feet of the illusory creature and can see it, you can use an action to move it magically anywhere within 30 feet of its card. Any physical interaction with the illusory creature reveals it to be an illusion, because objects pass through it. Someone who uses an action to visually inspect the creature identifies it as illusory with a successful DC 15 Intelligence (Investigation) check. The creature then appears translucent.
The illusion lasts until its card is moved or the illusion is dispelled. When the illusion ends, the image on its card disappears, and that card can't be used again.

Wondrous Item, Rare (Requires Attunement)
As a Magic action, you can place this 1-inch adamantine statuette on the ground and, using a command word, cause it to grow rapidly into a square adamantine tower. Repeating the command word causes the tower to revert to statuette form, which works only if the tower is empty. Each creature in the area where the tower appears is pushed to an unoccupied space outside but next to the tower. Objects in the area that aren’t being worn or carried are also pushed clear of the tower.
The tower is 20 feet on a side and 30 feet high, with arrow slits on all sides and a battlement atop it. Its interior is divided into two floors, with a ladder, staircase, or ramp (your choice) connecting them. This ladder, staircase, or ramp ends at a trapdoor leading to the roof. When created, the tower has a single door at ground level on the side facing you. The door opens only at your command, which you can issue as a Bonus Action. It is immune to the Knock spell and similar magic.
Magic prevents the tower from being tipped over. The roof, the door, and the walls each have AC 20; HP 100; Immunity to Bludgeoning, Piercing, and Slashing damage except that which is dealt by siege equipment; and Resistance to all other damage. Shrinking the tower back down to statuette form doesn’t repair damage to the tower. Only a Wish spell can repair the tower (this use of the spell counts as replicating a spell of level 8 or lower). Each casting of Wish causes the tower to regain all its Hit Points.

Wondrous Item, Rare (Requires Attunement)
This cube is about an inch across. Each face has a distinct marking on it. You can press one of those faces, expend the number of charges required for it, and thereby cast the spell associated with it (save DC 17), as shown in the Cube of Force Faces table.
The cube starts with 10 charges, and it regains 1d6 expended charges daily at dawn.
Cube of Force Faces
Spell Charge Cost
Mage Armor 1
Shield 1
Leomund’s Tiny Hut 3
Mordenkainen’s Private Sanctum 4
Otiluke’s Resilient Sphere 4
Wall of Force 5

Wondrous item, rare (requires attunement)

While you wear this cloak, it projects an illusion that makes you appear to be standing in a place near your actual location, causing any creature to have disadvantage on attack rolls against you. If you take damage, the property ceases to function until the start of your next turn. This property is suppressed while you are incapacitated, restrained, or otherwise unable to move.

Wondrous item, rare (requires attunement by a bard)
An instrument of the bards is an exquisite example of its kind, superior to an ordinary instrument in every way. Seven types of these instruments exist, each named after a legendary bard college. The following table lists the spells common to all instruments, as well as the spells specific to each one and its rarity. A creature that attempts to play the instrument without being attuned to it must succeed on a DC 15 Wisdom saving throw or take 2d4 psychic damage.
You can use an action to play the instrument and cast one of its spells. Once the instrument has been used to cast a spell, it can’t be used to cast that spell again until the next dawn. The spells use your spellcasting ability and spell save DC.
You can play the instrument while casting a spell that causes any of its targets to be charmed on a failed saving throw, thereby imposing disadvantage on the save. This effect applies only if the spell has a somatic or a material component.
Spells: Fly, invisibility, levitate, protection from evil and good, stone shape, wall of fire, wind wall

Wondrous Item, Rare
This cape smells faintly of brimstone. While wearing it, you can use it to cast Dimension Door as a Magic action. This property can’t be used again until the next dawn.
When you teleport with that spell, you leave behind a cloud of smoke. The space you left is Lightly Obscured by that smoke until the end of your next turn.

Wondrous Item, Very Rare (Requires Attunement)
This candle’s magic is activated when the candle is lit, which requires a Magic action. After burning for 4 hours, the candle is destroyed. You can snuff it out early for use at a later time. Deduct the time it burned in increments of 1 minute from its total burn time.
While lit, the candle sheds Dim Light in a 30-foot radius. While you are within that light, you have Advantage on D20 Tests. In addition, a Cleric or Druid in the light can cast level 1 spells they have prepared without expending spell slots.
Alternatively, when you light the candle for the first time, you can cast Gate with it. Doing so destroys the candle. The portal created by the spell links to a particular Outer Plane chosen by the DM or determined by rolling on the following table.

Wondrous item, rare
A figurine of wondrous power is a statuette of a beast small enough to fit in a pocket. If you use an action to speak the command word and throw the figurine to a point on the ground within 60 feet of you, the figurine becomes a living creature. If the space where the creature would appear is occupied by other creatures or objects, or if there isn’t enough space for the creature, the figurine doesn’t become a creature.
The creature is friendly to you and your companions. It understands your languages and obeys your spoken commands. If you issue no commands, the creature defends itself but takes no other actions.
The creature exists for a duration specific to each figurine. At the end of the duration, the creature reverts to its figurine form. It reverts to a figurine early if it drops to 0 hit points or if you use an action to speak the command word again while touching it. When the creature becomes a figurine again, its property can’t be used again until a certain amount of time has passed, as specified in the figurine’s description.
Bronze Griffon (Rare). This bronze statuette is of a griffon rampant. It can become a griffon for up to 6 hours. Once it has been used, it can’t be used again until 5 days have passed.

Wondrous item, rare
While a fire burns in this brass brazier, you can use an action to speak the brazier’s command word and summon a fire elemental, as if you had cast the conjure elemental spell. The brazier can’t be used this way again until the next dawn.
The brazier weighs 5 pounds.

Wondrous item, rare (requires attunement)
While wearing these bracers, you gain a +2 bonus to AC if you are wearing no armor and using no shield.

Wondrous item, uncommon (requires attunement)
While you wear these boots, your walking speed becomes 30 feet, unless your walking speed is higher, and your speed isn't reduced if you are encumbered or wearing heavy armor. In addition, you can jump three times the normal distance, though you can't jump farther than your remaining movement would allow.