A constant spell affects the monster without the monster needing to cast it, and its duration is unlimited. If a constant spell gets counteracted, the monster can reactivate it by spending the normal spellcasting actions the spell requires.
AC 44; Fort +36, Ref +32, Will +34
HP 400; Weaknesses cold iron 20, holy 20; Resistances mythic 10
Mythic Resilience (Fortitude and Will)
The creature treats its saving throws with the associated save as one degree of success better than it rolled. This is not cumulative with other effects that change their degree of success, like the incapacitation trait (except for rolling a natural 1 or 20). Each time the monster gains mythic resilience, choose one save. The ability should apply to the creature's highest saves first.
Rejection Vulnerability
Areelu Vorlesh's apotheosis into a demon has made her vulnerable to rejection like a succubus. When Areelu fails a Deception check to Embrace or Lie, or when a creature succeeds at its save against her mental spells or abilities, she takes 6d6 mental damage. For 1 hour after causing mental damage to Areelu in this way, the creature can deal 6d6 mental damage to her with a successful Demoralize action incorporating its rejection.
Undying Myth
Cost all of Areelu's Mythic Points
Trigger Areelu would die and has at least 1 Mythic Point
Effect Areelu remains standing and conscious and recovers 200 healing Hit Points.
Speed 25 feet, fly 35 feet
Melee Dagger +39 (agile, finesse, versatile s), Damage 1d6 spirit plus 1d4 spirit plus 4d4+12 piercing
Areelu attempts to Grapple a creature using her Deception bonus instead of Athletics. If the creature is willing, Areelu automatically succeeds.
Kiss of Locusts(divine, emotion, mental, unholy)
Frequency once per round
Effect Areelu engages a creature she has Grabbed or Restrained in an embrace or other act of passion, creating an opportunity for a cloud of locusts to enter the creature's body. The creature takes 5d6 persistent bleed damage and is Sickened 2 and Off-Guard for as long as they remain sickened.