uncommon ne huge dragon shadow 

Perception +29; greater darkvision, scent (imprecise) 60 feet

Languages Common, Draconic, Necril, Shadowtongue

Skills Acrobatics +25, Athletics +31, Deception +28, Intimidation +28, Nature +25, Stealth +27, Survival +28

Str +8 Dex +4 Con +6 Int +4 Wis +6 Cha +5

AC  37; Fort +27, Ref +25, Will +27

HP 275; Immunities negative, paralyzed, sleep

Frightful Presence (aura, emotion, fear, mental) 90 feet, DC 34

Attack of Opportunity [R] Jaws only.

Speed 50 feet, fly 180 feet

Melee [>] jaws +30 (negative, reach 15 feet), Damage 3d10+14 piercing plus 3d6 negative

Melee [>] claw +30 (agile, magical, reach 10 feet), Damage 3d10+14 slashing

Melee [>] tail +28 (magical, reach 20 feet), Damage 3d12+14 slashing

Melee [>] wing +28 (agile, magical, reach 15 feet), Damage 2d10+14 slashing

Primal Innate Spells DC 36; 7th darkness (at will), shadow walk, vampiric exsanguination; Cantrips (7th) 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 40-foot cone that deals 16d6 negative damage (DC 36 basic Reflex save). Undead creatures take 19d6 force damage instead of the negative damage.

• Shadows (necromancy, primal, shadow) The dragon breathes a blast of shadows in a 40-foot cone. Each creature within the cone must attempt a DC 36 Fortitude save.Critical Success The creature is unaffected.Success The creature is enfeebled 2 for 1 round.Failure The creature is enfeebled 2 for 1 minute.Critical Failure The creature is enfeebled 2 for 1 minute and blinded for 1 round.

Shadows (necromancy, primal, shadow) The dragon breathes a blast of shadows in a 40-foot cone. Each creature within the cone must attempt a DC 36 Fortitude save.Critical Success The creature is unaffected.Success The creature is enfeebled 2 for 1 round.Failure The creature is enfeebled 2 for 1 minute.Critical Failure The creature is enfeebled 2 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.

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 6d6 force damage to undead.

Bestiary 2, page 96. Expanded in LOIL.