Armor Class
20
Ancient Deep Dragon
Gargantuan Dragon · Neutral Evil
Hit Points
247 (15d20 + 90)
Speed
Walk 40 ft., Burrow 40 ft., Fly 80 ft., Swim 40 ft.
CR
18
Traits
Legendary Resistance (4/Day, or 5/Day in Lair)
If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack
The dragon makes three Rend attacks.
Rend
Melee Attack +12, reach 15 ft. 17 () Slashing damage plus 5 () Poison damage.
Slashing
PoisonNightmare Breath Recharge 5
WIS Save DC 20, each creature in a 90-foot Cone [Area Of Effect].
Failure: 44 () Psychic damage, and the target has the condition until the end of the dragon's next turn.
Success: Half damage only.
Failure: 44 () Psychic damage, and the target has the condition until the end of the dragon's next turn.
PsychicSuccess: Half damage only.
Bonus Actions
Shape-Shift
The dragon shape-shifts into a Small or Medium Humanoid or a Small or Medium Beast, or it returns to its true form. Its game statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying isn't transformed.
Legendary Actions
Pounce
The dragon moves up to half its Speed, and it makes one Rend attack.
Spore Salvo
CON Save DC 20, one creature within 30 feet of the dragon that it can see.
Failure: 16 () Poison damage, and the target has the condition. It repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.
Success or Failure: The dragon can't take this action again until the start of its next turn.
Failure: 16 () Poison damage, and the target has the condition. It repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.
Success or Failure: The dragon can't take this action again until the start of its next turn.