Audrey 2

Spellcasting Immunity. Audrey 2 is immune to all spells that would try to control it or effect they way it acts, like charm person. 

Spellcasting. Audrey 2 is a 20th-level spellcaster. Its spellcasting ability is charisma (spell save DC 16 wisdom saving throw, +8 to hit with spell attacks). Audrey 2 has following spells prepared:
Cantrips (at will):  Acid Splash, Cause fear, Infestation, Poison Splash, True Strike
1st level (6 slots): Chaos Bolt, Charm Person Detect poison and disease, False life, Hail thorns
2nd level (6 slots): Blindness and deafness, Detect thoughts, Web                                     
3rd level (6 slots): Fear, Hypnotic pattern, Counter Spell
4th level (6 slots): Blight, Charm Monster, Dominate Beast
5th level (5 slots): Cloud Kill, Creation, 
6th level (4 slots): Circle of Death, Create Undead, Disintegrate
7th level (3 slots): Finger of Death, Power Word Pain
8th level (2 slots): Abi-Dalzim’s Horrid Wilting, Dominate Monster
9th level (1 slots): Power word kill, Wish

Root. Using one action Audrey 2 can root itself into the ground making it's AC increase by 5 and all of it's attacks gain times 2 damage, but it's dexterity will decrease by five.

Multi Attack. Attacks 3 time, once with lick and twice with bite. 

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: (1d6 + 2) [piercing] damage. 

Lick. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: (1d4 + 2) [necrotic] damage. 

Barbs. Ranged Weapon Attack: +5 to hit, range 80 feet in a sphere., multiple targets. Hit: (1d4+2) [piercing] damage and (2d6+2) [poison] damage.

Grow. After approximately half a cup of blood has been drained into the soil in a five foot radius of Audrey 2 it will change it's size to the next highest level and all of it's scores will increase by two, it's multi attacks gains 1 attack until it can attack 5 times and the stat increases on specific actions, it's hit point maximum increases by 20. Audrey 2 must also start unable to cast it's 3rd through 9th level spells and unlocks the ability to cast one level higher spell every time grow is activated. This effect can be used 15 times before going away

Feed Me. All those who come within a five foot radius of Audrey 2 must take make a DC20 charisma saving throw or cut themselves dealing 1d4+2 damage to them selves and become exhausted.

Praise the Sun. Any radiant damage that would affect Audrey 2 instead heals him the amount of damage it would do

Repopulate. When Audrey 2 dies it shoots out four seeds that can be grown.

These actions can be used to replace the multi attack and he can use one every 5 turns.

Negate (Costs 0 Actions, can only be used once per day). Audrey 2 can Negate any action this overrides anything even if it claims it can not be negated. This can not be stopped by any means.

Regrow (Costs 3 Actions). Audrey 2 can, instead of growing, when it has the opportunity can refill of it's spell slots and it's hit points, as well as remove all status and spell effects.

Rush of Toxins (Costs 1 Bonus Actions). All of Audrey 2's attacks gains and extra 6d8+4 poison damage for the next 10 turns.