b'Dragon, Umbral (Adult) \n'b'  Huge   dragon ,  chaotic evil  \n'b'  Armor Class  19 (natural armor)  Hit Points  256 (19d12 + 133)  Speed  40 ft., climb 40 ft., fly 80 ft.\n'b' STATS STR: 28 (+9) DEX:  10 (+0)  CON:  25 (+7)  INT:  20 (+5)  WIS:  20 (+5)  CHA:  20 (+5)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Saving Throws   Dexterity  +6,  Constitution  +13,  Wisdom  +11,  Charisma  +11  Skills   Perception  +11,  Stealth  +12  Damage Resistances  necrotic  Damage Immunities  fire  Senses   blindsight  60 ft.,  darkvision  120 ft., passive  Perception  21  Languages  Common, Draconic  Challenge  17 (18,000 XP) \n'b' Special Traits \n'b'   Innate Spellcasting . The dragon\xe2\x80\x99s spellcasting ability is  Charisma  (spell save DC 19, +11 to hit with spell attacks). The dragon can innately cast the following spells at will, requiring no material components:\n'b'\n'b'   detect evil and good ,  darkness , ray of  exhaustion . \n'b'\n'b'  Legendary Resistance (3/day) . If the dragon fails a saving throw, it can choose to succeed instead. \n'b'  Living Shadow . While in dim light or darkness, the dragon has  resistance  to damage that isn\xe2\x80\x99t force, psychic or radiant. \n'b'  Shadow Stealth . While in dim light or darkness, the dragon can take the  Hide  action as a bonus action. \n'b'  Sunlight Sensitivity . While in sunlight, the dragon has disadvantage on  attack  rolls, as well as on  Wisdom  ( Perception ) checks that rely on sight. \n'b'  Actions \n'b'   Multiattack . The dragon can use its Frightful Presence and make three attacks: one with its bite and two with its claws. \n'b'  Bite .  Melee Weapon Attack : +15 to hit, reach 10 ft., one target.  Hit : 20 (2d10 + 9) piercing damage plus 10 (3d6) necrotic damage. \n'b'  Claws .  Melee Weapon Attack : +15 to hit, reach 5 ft., one target.  Hit : 18 (2d8 + 9) slashing damage. \n'b'  Tail .  Melee Weapon Attack : +15 to hit, reach 15 ft., one target.  Hit : 22 (3d8 + 9) bludgeoning damage. \n'b'  Frightful Presence . Each creature of the dragon\xe2\x80\x99s choice that is within 120 feet of the dragon and aware of it must succeed on a DC 19  Wisdom  saving throw or become  frightened  for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature\xe2\x80\x99s saving throw is successful or the effect ends for it, the creature is immune to the dragon\xe2\x80\x99s Frightful Presence for the next 24 hours. \n'b'  Shadow Breath (Recharge 5-6) . The dragon exhales shadowy flames in a 60-foot cone. Each creature in the that area must make a DC 21  Dexterity  saving throw, taking 63 (18d6) necrotic damage on a failed save, or half as much damage on a successful one. A humanoid reduced to  0 hit points  by this damage dies, and an undead  shadow  rises from its corpse and act immediately after the dragon in the initiative count. The shadow is under the dragon\xe2\x80\x99s control. \n'b'  Legendary Actions \n'b' The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature\xe2\x80\x99s turn. The dragon regains spent legendary actions at the start of its turn. \n'b'   Detect . The dragon makes a  Wisdom  ( Perception ) check. \n'b'  Tail Attack . The dragon makes a tail  attack . \n'b'  Wing Attack (Costs 2 Actions) . The dragon beats its wings. Each creature within 10 feet of the dragon must succeed on a DC 22  Dexterity  saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked  prone . The dragon can then fly up to half its flying speed.'