Azarov's Nightmare

Hell is Home. Has Regeneration of 15 per Round as long as she rests on the 6th Circle

Spellcasting. 

(10 slots): [Harm, [Flesh to Stone] [Haste] [Feeblemind] [Plane shift] [Teleport]

Legendary Resistance. This ability activates when the creature fails a save of any kind. If a creature fails, it can choose to succeed instead.(4 Uses/Long Rest)

 Too Corrupt for death. Azarov's Nightmare cannot pass the threshold of death as she is cursed with immortality. The demonic emotion within her actually prevents her from dying

Serve. Can Choose 1 creature to pass a DC 24 CHS Save. Or be Charmed and defend her until you break out

Scale Armblade. Melee Weapon Attack: +17 to hit, reach 10 ft., 1 target. Hit: # (2d8 + 10) Slashing damage. 

Flesh Rope. RangedWeapon Attack: +17 to hit, range 120 ft., 2 target. Hit:  (3d10 + 2) Piercing damage. and must roll a Strength Save of 19 or be grappled by the flesh rope

 Summon Demons: rolls 1d8 and summons that amount of cr 6 demons or fiends within 30 ft of her

Summon Usurper. Summons the Usurper to approach her

Summon Onslaughter. Summons the Onslaughter to approach her

STONE FORM ACTIONS

Overwhelming Threat. If both stones are activated. No spells can hit her until one or both of the stones effects end

Trident Melee Weapon Attack: +22 to hit, reach 30 ft., 1 target. Hit: # (3d10 + 22) Slashing damage. 

Change Tendril Direction. Can change 1 Tendril To move somewhere within 160 ft

Corrupt Weapon. Places the Zurgurns curse on your weapon. It adds a point of Exhaustion on top of the hits damage. If the weapon hit with the curse brings the creature below zero hp they are petrified.

Visionary Foresight. Can Halve the damage given to her from one attack

I Don't belong here, You do. Can swap places with an unwilling creature within 120ft Wisdom save dc 25

Azarov's Nightmare gets 3 Legendary actions per turn

Command Tendril (Cost 1 Legendary Action). Can Use a Lair action

Vicious Claw (Costs 1 Legendary Action). Uses their claws to attack a creature. Attack: +12 to hit, reach 10 ft., 1 target. Hit:  (2d12 + 12) Magical Slashing damage. 

Galvanizing Gaze (Costs 1 Legendary Action). Looks into a creatures eyes. That creature must make a wisdom saving throw DC 26 or combust and take 4d10 Fire damage.

A Mythic Action can be used after hitting half health and must use a full turn. The Sellina's Stone of corruption will be activated.

Sellina's Stone of Corruption (Costs 1 Turn.) The Monster crushes the stone. Azarovs Nightmare now is a huge creature. Their AC drops to 16 but HP raises to 1200. They now have a plus 22 to hit and damage rolls, and gain a flying speed of 360ft. The Resistances and immunities stay the same this effect lasts 1 hour

Sellina's Stone of Power. Activates without any prerequisite. Any natural roll of 14 or higher counts as a crit. She is now immune to crits and gains all spell slots back. This effect lasts for 3 turns.