Magic Items

Wondrous item, rare
You can use an action to blow this horn. In response, 3d4+4 warrior spirits come from the Abyss and appear within 60 feet of you. They use the statistics of a berserker and look like minotaurs. Once you use the horn, it can't be used again until 7 days have passed.

Weapon (pike), very rare
Forged of black, pitted iron, the haft of this doubletined pike is wrapped in the supple hide of a young red dragon. Wisps of black smoke stream from a glowing red stone at the butt of the weapon only to drift away on an unseen breeze.

Wondrous item, rare
A perfect sphere of black obsidian is tied to a necklace of prayer beads (mundane), and seems to glow with a very faint internal light. If you spend a short rest praying over this talisman and taking no other actions, you can break it on the ground at the end of the rest, destroying the talisman, to infuse the ground around you with holy or unholy energy.
By breaking the talisman in this way, you cast hallow as an action, requiring no material components.

This book contains memory and logic exercises, and its words are charged with magic. If you spend 48 hours over a period of 6 days or fewer studying the book's contents and practicing its guidelines, your Intelligence score increases by 2, as does your maximum for that score. The manual then loses its magic, but regains it in a century.

Armor (shield), very rare (requires attunement)
While holding this shield, you have advantage on saving throws against spells and other magical effects, and spell attacks have disadvantage against you.
This tower shield is made of hundreds of interlocking humanoid bones, dipped in a shimmering silver resin. When you are targeted by a spell, the bones vibrate gently and emit deep, ominous chanting in ancient Oman, lasting for 1d6 rounds.

Wondrous item, very rare (requires attunement)
An Ioun stone is named after Ioun, a god of knowledge and prophecy revered on some worlds. Many types of Ioun stone exist, each type a distinct combination of shape and color.
When you use an action to toss one of these stones into the air, the stone orbits your head at a distance of 1d3 feet and confers a benefit to you. Thereafter, another creature must use an action to grasp or net the stone to separate it from you, either by making a successful attack roll against AC 24 or a successful DC 24 Dexterity (Acrobatics) check. You can use an action to seize and stow the stone, ending its effect.
A stone has AC 24, 10 hit points, and resistance to all damage. It is considered to be an object that is being worn while it orbits your head.
Insight: Your Wisdom score increases by 2, to a maximum of 20, while this incandescent blue sphere orbits your head.

Wondrous item, legendary (requires attunement by a creature that has proficiency in the Arcana skill)
The black crystal tablet is a legendary magic item that requires attunement by a creature that has proficiency in the Arcana skill. Any creature that attunes to the tablet must make a DC 20 Wisdom saving throw at the end of its next long rest. On a failed save, the creature becomes afflicted with a random form of long-term madness.
As an action, a creature attuned to the black crystal tablet can use it to cast eyebite or gate (the portal created by this spell links to the Far Realm only). After the tablet is used to cast a spell, it cannot be used again until the next dawn.

Food and other perishable items do not age or decay while inside it. The chest is 2.5 feet long, 1.5 feet wide, and 1 foot tall with a half-barrel lid. It weighs 25 pounds.

The storm giant quintessent Dessa imbued this belt with her elemental strength. When the belt’s fantastic strength is used lightning dances around the wearer while a warm desert wind blows in the area.

This specific tome belongs to Szass Tam, leader of the Red Wizards of Thay. He watches anyone using this tome and can also write cryptic messages in the book. These messages appear at midnight and fade away after they are read.

This impressive battleaxe possesses a massive haft with a huge gear turning gently atop it. Connected to the gear are a series of gnashing blades that extend when the weapon is wielded against giants. As a bonus action, a dwarf or a character that worships a dwarven deity may brandish this weapon and gain advantage on one Charisma (Intimidation) check. Once this property has been used, it can’t be used again until the following dawn.