Spectre, Demigod of the Obsidian Requiem

Forged by Iunathar, enslaved by Asmodeus, and then outwitted him, Spectre's legend is a tapestry of bargains and betrayals. He slew champions in the Trial of Ascension and claimed the Conflux of Champions, only to be betrayed by his protégé Necro. After a centuries-long hunt he showed mercy to his maker and earned demigod status. Adventurers who find his lair may bargain for forbidden doors or face moral tests.

MediumCelestial(Demigod (Celestial / Fiend affinity))CR 30Lawful Neutral

Spectre, Demigod of the Obsidian Requiem

PlanarDemigodShapeshifterArcaneArtifact-bearerFiend-celestial hybrid
HP546AC25SPDWalk 40 ft., Fly 90 ft. (hover), Teleport (legendary and lair options) up to 300 ft.CR30ArcanaInsightPerceptionPersuasionStealth
STR
22
save
DEX
20
CON
26
save
INT
24
WIS
22
save
CHA
30
save
Shapechanger. Spectre can use an action to polymorph into any humanoid form he has seen or revert to his true form. He retains his statistics except for size and movement changes. He can remain in another form for up to 24 hours. While shapeshifted, his voice can mimic any language perfectly and his telepathy remains active.
Legendary Resistance. Spectre automatically succeeds on a failed saving throw three times per day. He regains uses at dawn. Legendary resistances count separately and may stack narratively but cannot be expended simultaneously with these successes.
Obsidian Requiem Regeneration. Spectre regains 30 hit points at the start of his turn if he has at least 1 hit point and is within his lair. If he is reduced to 0 hit points outside his lair, his essence disperses into one nearby door within 1 mile that he created or touched, and he reforms in his lair after days unless impeded.
Eyes of Covenant. Spectre senses the presence of bargains, contracts, and pacts within 1 mile. He knows the broad terms, penalties, and signatories of contracts he investigates but not their secret clauses without a contested skill check.
Portal Mastery. While within his lair, Spectre can cause up to three doors to become active portals. Activating or deactivating a portal is a bonus action for Spectre. Creatures who attempt to pass through an active portal must make a Wisdom saving throw to resist planar tethering effects.
Multiattack. Spectre makes three attacks, or uses two Lash strikes and one Stellar Strike. Its attacks are magical and bypass resistance to nonmagical attacks.
Astral-Eyed Seraphic Lash. Melee Weapon Attack: to hit, reach 15 ft., one target. Hit: 28 () radiant damage plus 21 () necrotic damage. If the target is an immortal, celestial, or fiendish creature, it takes an additional 21 () psychic damage and must succeed on a Wisdom saving throw or be stunned until the end of its next turn. The Lash's eyes flare on a hit; the target's soul is glimpsed and Spectre learns its creature type and one condition affecting it.
Stellar Strike. Ranged Spell Attack: to hit, range 120 ft., one target. Hit: 45 () force damage. If the target is reduced to 0 hit points by Stellar Strike, its soul is pulled into the Obsidian Requiem for 1 minute. While held, the target is unconscious and immune to death saves; allies can attempt a contested Charisma check (Spectre's spellcasting modifier versus the ally's Charisma) to free them.
Conflux of Champions (Recharge 5-6). Spectre opens a fracture to the Spectral Phoenix in a 60-foot-radius centered on a point it can see within 300 feet. Each creature of Spectre's choice must make a Constitution saving throw, taking 77 () radiant damage and 77 () necrotic damage on a failed save, or half as much on a successful one. Additionally, doors, portals, and planar gates in the area are twisted: within 1 minute they function as random doors to other planes or locations determined by the DM. Once Spectre uses Conflux of Champions, it cannot use it again until it finishes a short or long rest.
Soul Sever. Melee Weapon Attack: to hit, reach 5 ft., one target. Hit: 36 () bludgeoning damage plus 27 () psychic damage. The target must succeed on a Constitution saving throw or be marked by the Obsidian Requiem for 1 minute. While marked, the target takes 10 psychic damage at the start of its turn and Spectre has advantage on attack rolls against that target. If the marked target dies, Spectre regains hit points equal to twice the target's challenge rating times 10.
Reflexive Aegis. Reflexive Aegis. When a creature Spectre can see casts a spell that would target him or an ally within 30 feet, Spectre can impose disadvantage on the attack roll or spell attack or grant himself or the ally advantage on a saving throw. Once used, this reaction cannot be used again until the start of his next turn.
Astral Lash. Astral Lash. Spectre makes one Astral-Eyed Seraphic Lash attack.
Shift Door (Costs 2 Actions). Shift Door. Spectre teleports up to 120 feet to an unoccupied space he can see or forces one door or portal within 60 feet to open to a random other plane or location for 1 minute. Creatures passing through must succeed on a Wisdom saving throw or become lost in a side plane and reappear after rounds in a random location within 30 feet of their origin.
Command Immortal (Costs 3 Actions). Command Immortal. Spectre uses one of his lower-level innate spells that has a casting time of 1 action, such as greater restoration, dispel magic, or banishment without using a spell slot.
Cantrips
CantripsVaries Spectre can innately cast the following spells, requiring no material components. His spellcasting ability is Charisma (spell save DC 26, +18 to hit with spell attacks). He can cast each spell at will unless noted.
1st level
1st-level options (at will)Abjuration Armor of Agathys, Shield, Dispel Magic
3rd level
3rd-level optionsEnchantment/Abjuration Counterspell, Hypnotic Pattern, Greater Restoration
4th level
4th-level optionsConjuration Plane Shift, Banishment, Dimension Door
6th level
6th-level optionsEvocation/Enchantment Wall of Force, Disintegrate, Dominate Monster
9th level
9th-level optionsUniversal/Misc Wish (usable only under extraordinary narrative conditions), True Resurrection, Foresight
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