Ioun Stone of Strength

Strength (Very Rare). Your Strength score
increases by 2, to a maximum of 20, while this
pale blue rhomboid orbits your head.
Another creature may use an action to grasp
the stone either by making an attack against AC
24 or a DC 24 Acrobatics. You can as an action
stow it, ending its effect.
It has ab AC 24, 10 hit points, and resistance to
all damage.