Ioun Stone, Mastery

Enchanting [Eclectist] - Master
Time: 1,000 hours
Value: 35,000 gp

Tools: jeweler's tools
Ability Check: DC 25 Intelligence check
Properties: none
Description: When you use an action to toss this pale green prism into the air, the stone orbits your head at a distance of 1d3 feet and confers a benefit to you. Your proficiency bonus increases by 1 while this stone orbits your head. 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.