rare ne gargantuan dragon shadow 

Perception +36; greater darkvision, scent (imprecise) 60 feet, tremorsense (imprecise) 60 feet

Languages Common, Daemonic, Draconic, Necril, Shadowtongue

Skills Acrobatics +33, Athletics +38, Deception +34, Intimidation +36, Nature +34, Stealth +35, Survival +34

Str +10 Dex +5 Con +7 Int +6 Wis +8 Cha +6

AC  45; Fort +35, Ref +33, Will +38

HP 375; Immunities negative, paralyzed, sleep

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 40

Attack of Opportunity [R] Jaws only.

Speed 60 feet, fly 200 feet

Melee [>] jaws +38 (negative, magical, reach 20 feet), Damage 4d10+18 piercing plus 4d6 negative and drain vigor

Melee [>] claw +38 (agile magical, reach 15 feet), Damage 4d10+18 slashing

Melee [>] tail +36 (magical, reach 25 feet), Damage 4d12+18 slashing

Melee [>] wing +36 (agile, magical reach 20 feet), Damage 3d10+18 slashing

Primal Innate Spells DC 42; 10th massacre; 9th darkness (at will), finger of death; 8th vampiric exsanguination (at will); Cantrips (10th) detect magic

Breath Weapon [>>] The umbral dragon breathes in one of two ways. They can't use Breath Weapon again for 1d4 rounds.

• Negative (necromancy, negative, primal) The dragon breathes a blast of darkness in a 50-foot cone that deals 21d6 negative damage (DC 42 basic Reflex save). Undead creatures take 25d6 force damage instead of the negative damage.

• Shadows (necromancy, primal, shadow) The dragon breathes a blast of shadows in a 50-foot cone. Each creature within the cone must attempt a DC 42 Fortitude save.Critical Success The creature is unaffected.Success The creature is enfeebled 3 for 1 round.Failure The creature is enfeebled 3 for 1 minute.Critical Failure The creature is enfeebled 3 for 1 minute and blinded for 1 round.

Draconic Frenzy [>>] The dragon makes two claw Strikes and one wing Strike in any order.

Draconic Momentum The dragon recharges their Breath Weapon whenever they score a critical hit with a Strike.

Drain Vigor (primal, necromancy) When the dragon deals negative damage to a living creature with its jaws Strike, the umbral dragon gains 20 temporary Hit Points and the creature must succeed at a DC 41 Fortitude save or become enfeebled 2. Further damage dealt by the dragon's jaws Strike increases the enfeebled condition value by 2 on a failed save, to a maximum of enfeebled 4.

Ghost Bane An umbral dragon's Strikes affect incorporeal creatures with the effects of a ghost touch property rune, and an umbral dragon's jaws deal an additional 8d6 force damage to undead.

Bestiary 2, page 97. Expanded in LOIL.