Avsheros the Betrayer

Constant Spells — 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.

+1 Status to All Saves vs. Magic —

Regeneration 20 (Deactivated by Unholy) — This monster regains the listed number of Hit Points each round at the beginning of its turn. Its Dying condition never increases beyond Dying 3 as long as its regeneration is active. However, if it takes damage of a type listed in the regeneration entry, its regeneration deactivates until the end of its next turn. Deactivate the regeneration before applying any damage of a listed type, since that damage might kill the monster by bringing it to Dying 4.

Attack of Opportunity —

Hateful Gaze (aura, divine, visual) — 60 feet. When a creature ends its turn in the aura, it must attempt a DC 45 Fortitude save. If the creature fails, it is Drained 1 and Sickened 1 (Drained 2 and Sickened 2 on a critical failure).

Avsheros can deactivate or activate this aura using a single action, which has the concentrate trait.

No matter the result of the save, a creature can't be affected by Avsheros's hateful gaze again for 1 minute.

Blasphemous Arms — Any weapon gains the effects of an Unholy property rune while Avsheros wields it.

Wail of the Betrayed (auditory, fear, mental) — Avsheros lets out an agonized wail that invokes grief and a feeling of betrayal in those who hear it.

All creatures within 120 feet must succeed at a DC 47 Will save or become Frightened 2. A creature frightened in this way can't willingly accept aid of any kind from an ally until the frightened condition is removed.

On a successful save, the creature is immune to Avsheros's Wail of the Betrayed for 24 hours.