Ioun Stone of Fortitude

Very Rare

Wondrous Item, very rare (requires attunement) When you use an action to toss the stone into the air, the stone orbits your head at a distance of 1d3 feet and it 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 AC24 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 an object that is being worn while orbiting your head. Your Constitution score increases by 2, to a maximum of 20 while this pink rhomboid orbits your head. This item can be found in the Dungeon Masters Guide.

Tome of Clear Thought

Very Rare