unique ce large fiend humanoid xulgath 

Perception +39; darkvision

Languages Abyssal, Common, Draconic, Undercommon

Skills Arcana +38, Athletics +41, Intimidation +40, Survival +40, Thaegouked Lore +40

Str +9 Dex +2 Con +6 Int +2 Wis +6 Cha +4

AC  48; Fort +37, Ref +34, Will +36

HP 430; Weaknesses cold iron 15, good 15

Echoes of Aeons At the start of Falisostend's turn, if he is dead, unconscious, or otherwise unable to act, his efforts in the unfinished extinction curse ritual pull on the power of an aeon orb. The surge of power heals his body completely without causing the wounded condition, causes him to grow an additional tentacle, and attempts to counteract all detrimental effects on Falisostend as a 10thlevel effect with a +42 counteract modifier. An aeon orb used by Falisostend or the heroes is depleted and can't be used to power this ability.

Enraging Stench (aura, emotion, mental, olfactory) 30 feet. A creature that enters or begins their turn in the emanation must attempt a DC 45 Fortitude save. On a failure, the creature is sickened 2 and confused for 1 round; on a critical failure, it can't target Falisostend with any Strikes or other effects from its confused condition. While within the emanation, the creature takes a –2 penalty to saves to recover from the sickened condition. A creature that succeeds at its save is temporarily immune to all xulgaths' stenches for 1 minute. Falisostend can suppress or resume this aura as a free action.

Touch of Thaegouked Falisostend begins combat with two tentacles. Each tentacle has 66 HP and is immune to area damage. A creature can attempt to sever one.

of Falisostend's tentacles by specifically targeting it and dealing damage equal to the tentacle's Hit Points. A tentacle not completely severed returns to full HP at the end of any creature's turn. For each tentacle he has, Falisostend gains an extra reaction at the start of his turn that can be used only for an Attack of Opportunity. If he has no tentacles, he can no longer make tentacle Strikes, Writhe.

Independently, or Constrict.

Attack of Opportunity [R] (tentacle) only.

Speed 30 feet; air walk, freedom of movement

Melee [>] spiked gauntlet +41 (agile, magical), Damage 4d8+19 piercing plus 1d6 evil

Melee [>] tentacle +41 (agile, magical, reach 20 feet), Damage 4d8+19 slashing plus Grab

Melee [>] jaws +41 (magical), Damage 4d12+19 piercing

Divine Prepared Spells DC 45, attack +37; 10th harm (×5), miracle, weapon of judgment; 9th blade barrier, devour life, wail of the banshee; 8th eclipse burst, finger of death (×2); 7th paralyze, resist energy (×2); 6th divine wrath, flame strike, restore senses

Cantrips (10th) divine lance, message, read aura, shield; Constant (4th) air walk, freedom of movement Rituals DC 45; Abyssal pact, atone, commune.

Constrict [>] 4d8+12 bludgeoning, DC 45

Writhe Independently [>] Frequency once per round; Effect Falisostend makes one tentacle Strike with each tentacle he currently has (to a maximum of six Strikes), but he can't target a single creature with more than one Strike. Each attack counts toward his multiple attack penalty, but the penalty doesn't increase until all the attacks have been made.

Extinction Curse #6: The Apocalypse Prophet, page 90.