Amphibious. Abhagwyn can breathe air and water.

Innate Spellcasting. Abhagwyn's innate spellcasting ability is Wisdom (spell save DC 16). The dryad can innately cast the following spells, requiring no material components:

At will: druidcraft, poison spray, shape water, thorn whip

4/day each: entangle, fog cloud, goodberry, healing word. speak with animals

3/day each: gust of wind, pass without trace, warding wind

2/day each: speak with plants, tidal wave, wall of water, water breathing

1/day each: antilife shell, control water, maelstrom

Magic Resistance. Abhagwyn has advantage on saving throws against spells and other magical effects.

Speak with Beasts and Plants. Abhagwyn can communicate with beasts and plants as if they shared a language.

Fey Charm. Abhagwyn targets one humanoid or beast that she can see within 30 feet of her. If the target can see her, it must succeed on a DC 16 Wisdom saving throw or be magically charmed. The charmed creature regards her as a trusted friend to be heeded and protected. Although the target isn't under her control, it takes her requests or actions in the most favorable way it can.

Each time Abhagwyn or its allies do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 24 hours or until Abhagwyn dies, is on a different plane of existence from the target, or ends the effect as a bonus action. If a target's saving throw is successful, the target is immune to her Fey Charm for the next 24 hours.

Abhagwyn can have no more than one humanoid and up to three beasts charmed at a time.

Acid Armor: Ashagwyn can coat herself in layer of acid that doesn't hurt her and raises her AC up to 16 similar to Barkskin, the effect lasts 1 hour. Whenever she is hit with a melee attack or melee spell attack the attacker takes (2d6) Acid damage. Metal weapons that make contact with her have to make a save DC of 16 or take -1 penalty permanently. The weapon rolls 1d20 + proficiency bonus + material modifier. Magic weapons are unaffected. She can do this 3 times a day as a reaction.