Nydazuul

Greater Darkvision — A creature with greater darkvision can see perfectly well in areas of darkness and dim light, though such vision is in black and white only. A creature with greater darkvision can see through even forms of magical darkness.

Telepathy 100 feet (aura, magical) — A monster with telepathy can communicate mentally with any creatures within the listed radius, as long as they share a language. This doesn't give any special access to their thoughts, and communicates no more information than normal speech would.

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.

Confusing Display (concentrate, emotion, fear, incapacitation, mental, occult, visual) — The augnagar's writhing limbs and flesh seethe and squirm in a disorienting and unsettling manner. Creatures in a 30-foot emanation must attempt a DC 30 Will save, after which they are temporarily immune to further Confusing Displays for 1 minute.

Critical Success The creature is unaffected.

Success The creature is Stupefied 1 for 1 round.

Failure The creature is Stupefied 1 and Confused for 1 minute.

Critical Failure As failure, but the creature can't attempt a flat check to recover from confusion whenever it takes damage from an attack or spell.

Inhale Vitality (occult) — Frequency once per day

Effect The augnagar inhales sharply, drawing life force out of creatures in a 50-foot cone. Creatures in the area take 11d6 void damage (DC 30 Fortitude save, and the creature is fatigued on a failure). The augnagar becomes Quickened for 1 round on its next turn, and it can use the extra action only to Stride or Strike.

Rotting Curse (curse, disease, occult) — Saving Throw DC 30 Fortitude

Stage 1 Drained 1 (1 day)

Stage 2 Drained 2 and the creature displays hideous, festering wounds exuding a horrific stench. Any creature within 30 feet of the victim must succeed at a DC 30 Fortitude save or become Sickened 1 (plus Slowed 1 on a critical failure, for as long as it's sickened).

While within the aura, affected creatures take a -2 circumstance penalty to saves against disease and to recover from the sickened condition. A creature that succeeds at its save is temporarily immune for 1 minute. The victim of the disease doesn't roll a save, but takes the failure effects automatically and can't reduce its sickened value below 1 (1 day).