The Birch (Dark Places & Demogorgons)

This is the not the first time I've talked about The Birch. I statted her for 5e here. If you haven't watched this phenomenal  horror short take a few minutes and change that.

The Birch seems like she could be transplanted (pun intended) to the States and found near Jeffersontown or wherever your game is set. She's is more vicious and nastier than her dryad sisters.

"For thee who makest me

I shall come

He who breaks me

Shall come undone..."

Armor Class: 16

Hit Dice: 4
Move: 12
Attacks: 1 per Round
Attack Damage: Claw 1d6+1
Special: Tree Portal*
Bonuses: +2 to hit 
Terror: 15
HDE: 4

*Tree Portal: The Birch can merge with any tree as a part of her normal movement and may also teleport from any tree to any other within 100 feet.

The Birch is ancient tree spirit. She lives in a forest on the edge of town. She can be summoned by making an effigy of her symbol and reciting the ritual words above. The ritual and her origins are described in the Tome of the Birch (which appears to at least partially made from the birch wood). While she protects children with good hearts, her methods are dark and brutal and many bullies have died at her limbs.