A player of mine wanted to play a hamadryad based on the old 4e version and this is what I came up with. The lore is that they're dryads who, through falling in love with a mortal or some other means, have unbound themselves from their home tree.

• Ability Score Increase. Your Wisdom score increases by 1 and your Charisma score increases by 2.
• Age. Hamadryads are considered adults around 75 years of age and after becoming unbound from their tree they can live up to 450 years.
• Alignment. Hamadryads lean towards neutrality and tend to disregard laws and rules made by the more civilised races.
• Size. Hamadryads tend to be a bit shorter than humans. Your size is Medium.
• Speed. Your base walking speed is 30 feet.
• Oaken Vitality. When you roll a Hit Die to regain hit points, the minimum number of hit points you regain from the roll equals twice your Constitution modifier (minimum of 2). Additionally, at first level, your Hit Points increase by 2.
• Fey Nature. You have advantage on saving throws against being charmed, and magic can't put you to sleep. You are also affected by holy water as if you were an undead or fiend.
• Druidic Touch. You know one cantrip of your choice from the Druid spell list.
• Enchanting Beauty. When a creature you can see within 30 feet of you hits you with an attack, you can use your reaction to attempt to charm that creature. The target must succeed on a DC (8 + your proficiency bonus + your Charisma modifier) Wisdom saving throw or become charmed by you for one minute. The creature can repeat the saving throw if you or your allies deal damage to it. You can use this feature once and regain the ability to do so when you finish a short rest.
• Languages. You can speak, read and write Common and Sylvan.