Magic Items

The intense psionic scream of a dying elder brain dragon left a psychic splinter in your brain. For the better or worse it grants you resistance against spells and magical effects. Now you have to just find a way how to deal with the voices in your head!

Ring, rare (requires attunement) This ring stores spells cast into it, holding them until the attuned wearer uses them. The ring can store up to 5 levels worth of spells at a time. When found, it contains 1d6 - 1 levels of stored spells chosen by the DM. (2x Mirror Image) Any creature can cast a spell of 1st through 5th level into the ring by touching the ring as the spell is cast. The spell has no effect, other than to be stored in the ring. If the ring can't hold the spell, the spell is expended without effect. The level of the slot used to cast the spell determines how much space it uses. While wearing this ring, you can cast any spell stored in it. The spell uses the slot level, spell save DC, spell attack bonus, and spellcasting ability of the original caster, but is otherwise treated as if you cast the spell. The spell cast from the ring is no longer stored in it, freeing up space.

Bonus magic item for reaching 5th level

Rod, rare (requires attunement by a warlock)

While holding this rod, you gain a +2 bonus to spell attack rolls and to the saving throw DCs of your warlock spells.

In addition, you can regain one warlock spell slot as an action while holding the rod. You can’t use this property again until you finish a long rest.

Wondrous item, common (requires attunement by a spellcaster)
Etched with eldritch runes, this 1-inch-diameter ruby allows you to use a simple or martial weapon as a spellcasting focus for your spells. For this property to work, you must attach the ruby to the weapon by pressing the ruby against it for at least 10 minutes. Thereafter, the ruby can't be removed unless you detach it as an action or the weapon is destroyed. Not even an antimagic field causes it to fall off. The ruby does fall off the weapon if your attunement to the ruby ends.
This item is found in Xanathar’s Guide to Everything.
The Undisputed Multiversal Championship belt is made of polished gold and inlaid with decorative gems. The blood-red rubies inset into the belt can be removed only by the reigning Multiversal Champion. Once removed, they function as rubies of the war mage.

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.
Serpentine Owl (Rare). This serpentine statuette of an owl can become a giant owl for up to 8 hours. Once it has been used, it can’t be used again until 2 days have passed. The owl can telepathically communicate with you at any range if you and it are on the same plane of existence.

Wondrous item, uncommon (requires attunement) While this polished agate is on your person, you gain a +1 bonus to ability checks and saving throws.

Wondrous Item, common (requires attunement)

While this stuffed doll is within 5 feet of you, you can spend a short rest telling it to say up to six phrases, none of which can be more than six words long, and you can set a condition under which the doll speaks each phrase. You can also replace old phrases with new ones. Whatever the condition, it must occur within 5 feet of the doll to make it speak. For example, whenever someone picks up the doll, it might say, “I want a piece of candy.” The doll’s phrases are lost when your attunement to the doll ends.

Source: Xanathar's Guide to Everything

Wondrous item, common
You can cut this 50-foot coil of hempen rope into any number of smaller pieces, and then use an action to speak a command word and cause the pieces to knit back together. The pieces must be in contact with each other and not otherwise in use. A rope of mending is forever shortened if a section of it is lost or destroyed.
Unusual Material: This "Rope" is a tentacle and it defies every logic known to mankind.

This wand has 7 charges. With the wand in hand, you can use your action to fire the magic missile spell from the wand—no components required—and expend 1 to 3 of the wand's charges. For each charge you expend beyond 1, the spell's level increases by 1. You can use this wand even if you are incapable of casting spells.

The wand regains 1d6 + 1 expended charges each day at dawn. If you expend the wand's last charge, roll a d20. On a 1, the wand crumbles into ash and is destroyed.

Wand, rare (requires attunement by a spellcaster) While holding this wand, you gain a +2 bonus to spell attack rolls. In addition, you ignore half cover when making a spell attack.