Magic Items

Helm of Telepathy
Wondrous item, uncommon (requires attunement), Table F
This helm of telepathy takes the form of bejeweled tiara sporting a tiger’s eye stone and the heraldry of the Dukes of Scelptar. When worn, you feel an affection for house cats.
While wearing this helm, you can use an action to cast the detect thoughts spell (save DC 13) from it. As long as you maintain concentration on the spell, you can use a bonus action to send a telepathic message to a creature you are focused on. It can reply-using a bonus action to do so-while your focus on it continues. While focusing on a creature with detect thoughts, you can use an action to cast the suggestion spell (save DC 13) from the helm on that creature. Once used, the suggestion property can't be used again until the next dawn.
This item can be found in the Dungeon Master’s Guide.

Wand of Fireballs

Source: Dungeon Master's Guide

Wand, rare (requires attunement by a spellcaster)

This wand has 7 charges. While holding it, you can use an action to expend 1 or more of its charges to cast the Fireball spell (save DC 15) from it. For 1 charge, you cast the 3rd-level version of the spell. You can increase the spell slot level by one for each additional charge you expend.

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.

Wand of Lightning Bolts Rare true
Wand of Lightning Bolts Wand, rare (requires attunement by a spellcaster) This wand has 7 charges. While holding it, you can use an action to expend 1 or more of its charges to cast the lightning bolt spell (save DC 15) from it. For 1 charge, you cast the 3rd-level version of the spell. You can increase the spell slot level by one for each additional charge you expend. 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.

Staff of Healing

Staff, Rare (Requires Attunement by a Bard, Cleric, or Druid)

This staff has 10 charges. While holding the staff, you can cast one of the spells on the following table from it, using your spellcasting ability modifier. The table indicates how many charges you must expend to cast the spell.
Spell Charge Cost
Cure Wounds
1 charge per spell level (maximum 4 for a level 4 spell)
Lesser Restoration
2
Mass Cure Wounds
5

Regaining Charges. The staff regains 1d6 + 4 expended charges daily at dawn. If you expend the last charge, roll 1d20. On a 1, the staff vanishes in a flash of light, lost forever.

The smooth wood of this ordinary‐looking staff is pale, and streaked with multi‐colored veins. The staff is capped with a hollow, glass sphere that creates an illusory holy symbol of whichever deity the wielder worships. Luminescent butterflies flit around the staff’s cap and while in possession of the staff, the wielder feels fortunate and optimistic about what the future holds.

Armor (Shield), Rare (Requires Attunement)
The convex surface of this shield is a smooth and shiny ebon black. Though plain, it has fine flecks of white that sparkle when exposed to moonlight.
While holding this iron tower shield, you gain a +1 bonus to AC. This bonus is in addition to the shield’s normal bonus to AC.
Additionally, the shield has 3 charges, and it regains 1d3 expended charges daily at dawn. If you are holding the shield and push a creature within your reach at least 5 feet away, you can expend 1 charge to push that creature an additional 10 feet, knock it prone, or both.

Nettle (+2 Hand Crossbow)

Weapon (Hand Crossbow), Rare (requires attunement by a creature of non‐lawful alignment)

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

This hand crossbow looks to have seen better times. The wood is cracked and splintered and the string is heavily‐frayed. A large, blue feather hangs from the handgrip alongside a couple green, glass baubles. The crossbow whispers warnings to its bearer, granting a +2 bonus to initiative if the bearer isn't incapacitated.

Sentience. Nettle is a sentient chaotic neutral weapon with an Intelligence of 15, a Wisdom of 10, and a Charisma of 14. It has hearing and darkvision out to a range of 120 feet. Nettle speaks Common and Halfling.

Personality. Nettle is greedy and impetuous, and prefers that its wielder share these ideals. It demands to be better taken care of than its previous owners did. If its bearer is lawfully‐aligned, or if its bearer does not spend at least an hour each day tending to it (polishing, applying resin to the string, etc.), Nettle denies its bonuses to attack and damage rolls and initiative checks. It also shouts out insults to those nearby, imposing disadvantage on any Charisma (Deception or Persuasion) checks or Dexterity (Stealth) check that its wielder makes to move silently.

Arrow of Dragon Slaying
Weapon (arrow), very rare

An arrow of slaying is a magic weapon meant to slay a particular kind of creature. Some are more focused than others; for example, there are both arrows of dragon slaying and arrows of blue dragon slaying. If a creature belonging to the type, race, or group associated with an arrow of slaying takes damage from the arrow, the creature must make a DC 17 Constitution saving throw, taking an extra 6d10 piercing damage on a failed save, or half as much extra damage on a successful one.

Once an arrow of slaying deals its extra damage to a creature, it becomes a nonmagical arrow.

Other types of magic ammunition of this kind exist, such as bolts of slaying meant for a crossbow, though arrows are most common.