Andayen, the Fetid Briar is a natural, 9th level spellcaster whose spellcasting modifier is Charisma, has spell attack modifier of 22 and a Spell Save DC of 30.
Spiteful Hunger. Severed from Ullur's Heart, Andayen, The Tainted Briar remains trapped in a state of half death, hungering eternally for any form of energy to sustain himself with. Lightning, Radiant and Necrotic damage heals Andayen, the Tainted Briar for that amount instead.
Corrupted Puppetry. Any Tainted Briar patches that Andayen, the Tainted Briar creates may be make a Lash attack on an initiative count of 1.
While a briar patch is alive, damage that Andayen, the Tainted Briar takes is instead taken by the closest briar patch. Each patch can absorb up to 50hp worth of damage.
Lash Violent Growth The Tainted Grove [Recharge 6]. Bursting the seams of reality, Andayen the Tainted Briar attempts to capture all creatures within 120ft in a demi-plane. each creature in the effected area must pass a DC20 Wisdom Saving Throw or be captured within the demi-plane. The interior of this space is 120ft in diameter and 300ft tall, its walls covered in dense briar and a great Tombstone-like altar in the center. Where Andayen, the Tainted Briar once was it is a small floating sphere. this sphere has an AC of 20 and has 200 Hit points. This sphere take half damage from all sources and when its hit points reach 0 bursts, ejecting all that was within this space to their location outside the demi-plane.
Thorned Replicant