Ring of puzzler’s wit.

Uncommon

Ring, unncommon This gold ring bears a fluorite stone and is enchanted to sharpen the wearer’s mind. The ring has 3 charges and regains 1d4 − 1 expended charges daily at dawn. When you make an Intelligence check, you can expend 1 charge to grant yourself advantage on the check. This item is found in The Book of Many Things. The surface of the ring is covered is extremely detailed runework that forms a mazelike pattern on its surface and attempting to follow it never seems to work as it should.

Headband of Intellect

Uncommon