Archdruid Bodhmall

To attune put the ring on if you are female. Males won't even see it's a ring. To males the ring is unnoticeable, to even see it a male has to make a 30 on perception to see it. (Note: this applies to gender, not sex, a trans male won't see the ring, while a trans female will, non-binary people have a DC 15 to see the ring, and a DC5 to resist the rings pull.)

The Archdruid Bodhmall was a legendary druid when she died her wife fashioned a ring and imbued it with her memories and knowledge. After many ages, the ring is fully sentient on its own and possesses these traits. The ring was beautifully crafted from a knot of wood. 

Hexblood. If a sentient female picks the ring up, she will be compelled to wear the ring (DC10 to resist), if she does put the ring on so her race will be changed to Hexblood and her body will rapidly change over a week's time to resemble a Dryad or female-bodied Treant. Effectively making her a tree.  The ring will vanish into the body when this happens. It is theorized that the ring becomes the Crown which is indicative of hexbloods. 

Sentience. Even though the ring does not have the soul of the original Bodhmall, she has all her memories and knowledge, as such she has the following stats Int 12 Wis 20 Cha 11. The ring communicates with telepathy and shares all senses with the wearer. 

The ring is alive in you, as such if for any reason you lose consciousness the Ring will control your body, but instead of having access to your stats and abilities she will use the Archdruid's character sheet, there will be no visible difference. However, the Arch Druid will do everything in her power to restore you to consciousness. 

Once attuned to the ring you gain access to the cantrip: Druidcraft

Nondetection. The Archdruid Bodhmall defies attempts to magically locate it. Neither the ring nor its wearer can be targeted by any divination magic or perceived through magical scrying sensors.

False Appearance. While you remain motionless, you are indistinguishable from a normal tree. You also gain an advantage with stealth checks in forests. 

You are a Tree. Sunlight is Food for you, as such you do not need to eat food if you have at least 8 hours of sunlight, and 4 hours with your feet buried in soil per day. You will still need water at the same rate as food for a human. You do not need to breathe the same way as humans, and can water breath for a week at a time. In spaces where the air is foul for humans, you can breathe normally, and given enough time you will unfoul the air. 

Sleep like a tree. When you go for long rests, you become one with nature and become aware of what the trees, plants, and animals are aware of in your area. Waking from this becomes difficult,  when rolling to wake, you roll with a disadvantage. 

You will live as long as a tree, you will live for five hundred to a thousand years once you become one with the ring. Things that kill a tree can kill you, but you can regenerate from most injury and death experienced in combat. roll a 4d100's to determine how many days it takes to regenerate to full after death. Note: You do not get this roll if your body is fully burned to ash. However, if just a toe is left you will regenerate. If you died and do not regenerate, the ring will form at the spot of your death in 10 years' time.  Your memories will be remembered by the ring. 

Speak with Beasts and Plants. You can communicate with beasts and plants as if they shared a language. You also gain the Druidic language. 

Tree Stride. Once per turn, you can use 10 feet of her movement to step magically into one living tree within your reach and emerge from a second living tree within 60 feet of the first tree, appearing in an unoccupied space within 5 feet of the second tree. Both trees must be Large or bigger.

Notes: Language: Druidic, Advantage: Stealth, worn by females only, Shapechanging, Jewelry, Sentient