Magic Items

Source: Tasha's Cauldron of Everything

Wondrous item (tattoo), rarity varies (requires attunement)

Tattoo Attunement. To attune to this item, you hold the needle to your skin where you want the tattoo to appear, pressing the needle there throughout the attunement process. When the attunement is complete, the needle turns into the ink that becomes the tattoo, which appears on the skin.

If your attunement to the tattoo ends, the tattoo vanishes, and the needle reappears in your space.

Protection. While you aren't wearing armor, the tattoo grants you an Armor Class depending on the tattoo's rarity, as shown below. You can use a shield and still gain this benefit.
Rarity AC
Uncommon 12 + your Dexterity modifier
Rare 15 + your Dexterity modifier (maximum of +2)
Very Rare 18

Staff, very rare (requires attunement)

This staff can be wielded as a magic Quarterstaff that grants a +3 bonus to attack rolls and damage rolls made with it.

The staff has 10 charges. When you hit with a melee attack using it, you can expend up to 3 charges. For each charge you expend, the target takes an extra 1d6 Force damage.

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 becomes a nonmagical Quarterstaff.

Any other creature that attunes to the Ioun stone is cursed.

While cursed in this way, the creature is magically transformed into an animated, doll-like effigy of itself made of wood. The creature’s statistics are the same, except that it is a Construct with vulnerability to fire damage, and it doesn’t require air, food, or water. Items worn or carried by the creature are unaffected.