Adult Nightmare Dragon       CR 14
XP 38,400
CE Huge dragon (extraplanar, nightmare)
Init +4; Senses dragon senses; Perception +25
Aura frightful presence (180 ft., DC 23), nightmare eater (60 ft.)

DEFENSE
AC 31, touch 10, flat-footed 29 (+2 Dex, +21 natural, –2 size)
hp 212 (17d12+102)
Fort +16, Ref +12, Will +15
DR 10/magic; Defensive Abilities negative energy affinity; Immune cold, confusion effects, death effects, energy drain, paralysis, sleep; SR 15

OFFENSE
Speed 40 ft., fly 150 ft. (poor)
Melee bite +22 (2d8+7, Crit 19–20/x2), 2 claws +20 (2d6+3), tail slap +20 (2d6+7), 2 wings +20 (1d8+3)
Space 15 ft.; Reach 10 ft. (15 ft. with bite, tail slap)
Special Attacks crush,  nightmare breath (50-ft. cone, DC 18 Will save)
Spell-like Abilities (CL 17th; concentration +22)
     At will—darkness, nightmare (DC 20), shadow walk, sleep (DC 16)
Sorcerer Spells Known (CL 7th; concentration +12)
     3rd (5/day)—deep slumber (DC 18), dispel magic, inflict serious wounds (DC 18)
     2nd (7/day)—command undead (DC 17), invisibility, web (DC 17)
     1st (8/day)—grease (DC 16), inflict light wounds (DC 16), reduce person (DC 16), shield
     0th—detect magic, detect poison, disrupt undead (DC 15), mage hand, ray of frost, read magic

STATISTICS
Str 25, Dex 14, Con 22, Int 20, Wis 21, Cha 20
Base Atk +17; CMB +26; CMD 38 (42 vs. trip)
Feats Critical Focus, Hover, Improved Critical (bite), Improved Initiative, Improved Vital Strike, Multiattack, Power Attack, Skill Focus (Stealth), Snatch, Vital Strike
Skills Bluff +25, Diplomacy +25, Fly +18, Knowledge (arcana, local, planes) +25, Perception +25, Sense Motive +25, Spellcraft +25, Stealth +20, Survival +25
Languages Abyssal, Common, Draconic, Undercommon
SQ ghost bane, umbral scion

SPECIAL ABILITIES
Ghost Bane (Su) A nightmare dragon’s natural attacks act as though they have the ghost touch property.
Nightmare Breath (Su) Three times per day, a nightmare dragon can breathe a 50-ft. cone of shadows. Creatures that fail a DC 18 Will save are put to sleep for 1d6 rounds and when awoken they are confused for a number of rounds equal to half the amount of time they were asleep (minimum 1 round; no save).
Nightmare Eater (Su) The gluttony of the nightmare dragon allows it to spend a swift action to cause horrific dreams to invade the minds of sleeping creatures. These nightmares deal 2d6 negative energy damage and do not prompt a creature to awaken, healing the nightmare dragon the same amount of damage. The nightmare dragon can heal past its maximum hit point total though any additional temporary hit points vanish after an hour.
Umbral Scion (Ex) Nightmare dragons have negative energy affinity and are immune to energy drain and death effects.

 

[Submitted by Tim Snow!]

5E Rules

ADULT NIGHTMARE DRAGON
Huge dragon, chaotic evil
AC 18 (natural armor)
Hit Points 191 (18d12+74)
Speed 40 ft., fly 70 ft.
STR 22 (+6), DEX 14 (+2), CON 19 (+4), INT 18 (+4), WIS 20 (+5), CHA 20 (+5)

Saving Throws Dex +5, Con +8, Wis +10, Cha +10
Skills Deception +12, Insight +12, Perception +12, Persuasion +12, Stealth +10
Damage Immunities death effects, negative energy, poison
Condition Immunities poisoned
Damage Resistances bludgeoning from nonmagical weapons
Senses darkvision 60 ft., passive perception 22
Languages Common, Draconic
Challenge 14 (11,500 XP)

Legendary Resistance (3/day).
Nightmare Eater. As a bonus action, a nightmare dragon can deal 2d6 psychic damage to a sleeping creature, gaining a number of temporary hit points equal to the damage dealt. This does not awaken sleeping creatures.

ACTIONS
Multiattack. The nightmare dragon can use its Frightful Presence. It then makes four attacks: one with its bite, two with its claws, and one with its tail.
Bite. Melee Weapon Attack: +10 to hit, one target.
Hit: 17 (2d10+6) slashing damage.
Claw. Melee Weapon Attack: +10 to hit, one target.
Hit: 13 (2d6+6) slashing damage.
Tail. Melee Weapon Attack: +10 to hit, one target.
Hit: 15 (2d8+6) bludgeoning damage.
Frightful Presence. 120 ft., DC 20 Wisdom saving throw
Nightmare Breath (Recharge 5-6). The nightmare dragon exhales shadow in a 50-foot cone. Each creature in that line must make a DC 18 Wisdom saving throw, falling asleep for 1d6 rounds on a failed save. When they awaken they are confused for a number of rounds equal to half as long as they were asleep.

LEGENDARY ACTIONS
The nightmare dragon can take 3 legendary actions.
Detect. The nightmare dragon makes a Wisdom (Perception) check.
Ghost Bane. The nightmare dragon’s attacks count as magical for the purposes of overcoming damage resistances. Creatures immune to bludgeoning and slashing damage treat the nightmare dragon’s attacks as if they only had damage resistance instead.
Tail Attack. The nightmare dragon makes a tail attack.

This terrifying creature is a towering monstrosity that looms nearly twenty feet into the air. Six ears sprout from behind the curved horns at the top of its striped red face, the bone the same color as its hooves, the three claws extending from its arms, and the spined ridges running down its back to the end of its powerful tail.

GALATE CR 12
XP 19,200
CE Huge outsider (chaotic, daemon, evil, extraplanar, fire, nightmare lord)
Init +8; Senses darkvision 120 ft., detect good, see invisibility; Perception +16
Aura fire (5 ft., Reflex DC 21 halves or on fire), fear (60 ft., DC 21), frightful presence (60 ft., DC 21)

DEFENSE
AC 25, touch 9, flat-footed 24 (+1 Dex, +16 natural, -2 size)
hp 132 (16d10+64) regeneration 5 (good, silver)
Fort +10, Ref +11, Will +9; +4 vs. illusion-based effects
DR 10/good; Defensive Abilities illusion resistance; Immune acid, death effects, disease, fire, illusions, poison; Resist electricity 10
Weakness cold

OFFENSE
Speed 60 ft.
Melee gore +22 (2d6+8), 2 claws +20 (1d8+4 plus grab and 1d6 bleed, Crit 17-20/×3), tail +20 (2d6+4)
Space 15 ft.; Reach 15 ft.
Special Attacks night terrors, rend (1d8+8),
Spell-Like Abilities (CL 16th; concentration +19)
Constant—detect good, elemental aura (fire), protection from good, see invisibility
At will—dispel magic, greater teleport (self plus 50 lbs. of objects only)
3/day—deep slumber, detect thoughts, dream (DC 22), fly, invisibility, nightmare (DC 22), plane shift (from Aventyr to Alucinar or back again), shadow walk (DC 23), stinking cloud (DC 16), suggestion
1/day—feeblemind, modify memory, shadow conjuration (DC 21), shadow evocation (DC 22)

TACTICS
Before Combat The galate hides in the shadows or out of sight, using deep slumber and then nightmare on anyone that falls asleep.
During Combat Using its tremendous speed and strength a galate runs out to grab any spellcasters with its claw attack, dragging them away with shadow walk the next round and then deep slumber and its night terrors attack. It teleports back and knocks any remaining enemies unconscious, using night terrors and dream slave afterward.
Morale Galate fight to the (feigned) death and until they are completely destroyed.

STATISTICS
Str 26, Dex 12, Con 19, Int 14, Wis 9, Cha 17
Base Atk +16; CMB +26 (+30 grapple); CMD 37
Feats Critical Focus, Great Fortitude, Improved Critical (claws)B, Improved Initiative, Multiattack, Power Attack, RunB, Sickening Critical, Spring AttackB, Vital Strike
Skills Escape Artist +20, Intimidate +26, Knowledge (arcana) +21, Knowledge (planes) +21, Perception +18, Sense Motive +18, Stealth +16, Survival +18
Languages Abyssal, Draconic, Infernal; telepathy 100 ft.
SQ critical claws, dream slave, feign death, nightmare magic

ECOLOGY
Environment Alucinar
Organization solitary
Treasure double

SPECIAL ABILITIES
Critical Claws (Ex) A galate’s claws have a regular critical threat range of 19-20 and a critical modifier of x3, and galate receive Improved Critical (claws) as a bonus feat.
Dream Slave (Su) Instead of killing a target with its night terror ability, a galate may instead enslave it with a permanent dominate monster effect. The enslaved creature is healed of all Charisma damage taken from night terrors.
Feign Death (Ex) Whenever a galate is unconscious, it appears dead. A conscious galate can also make itself appear dead as an immediate action. Any creature that physically interacts with a galate feigning death must succeed at a DC 21 Heal check or DC 21 Will saving throw to recognize it is actually alive.
Frightful Presence (Su) This ability activates when the galate charges, attacks during a surprise round, or succeeds at a DC 15 Intimidate or Perform check. Its frightful presence has a range of 30 feet.
Night Terrors (Su) Once a galate enters a target’s mind with its dream or nightmare spell-like ability, it can attempt to control the target’s dream. If the target fails a Will saving throw, it remains asleep and trapped in the dream world with the galate. Thereafter, the galate controls all aspects of the dream. Each hour that passes, the target can attempt another saving throw to try to awaken (it automatically awakens after 8 hours or if the galate releases it). The target takes 1d4 points of Charisma damage each hour it is trapped in the dream; if it takes any Charisma damage, it is fatigued and unable to regain arcane spells for the next 24 hours. The target dies if this Charisma damage equals or exceeds its actual Charisma score.

5E Rules

GALATE
Huge outsider, chaotic evil
AC 17 (natural)
Hit Points 126 (12d12+48)
Speed 60 ft.
STR 22 (+6), DEX 12 (+1), CON 19 (+4), INT 14 (+2), WIS 9 (-1), CHA 17 (+3)
Saving Throws Str +10, Wis +7, Cha +7
Damage Resistances lightning; bludgeoning, piercing, and slashing from nonmagical weapons
Damage Immunities acid, death effects, disease, fire, illusions, poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive perception 13
Languages Abyssal, Draconic, Infernal; telepathy 100 ft.
Challenge 11 (7,200 XP)

Dream Slave. When a galate kills a creature under the effects of its dream spell, it can instead choose to revive that creature. The creature is under the galate’s control, as if it had cast dominate monster.
Feign Death. A DC 22 Wisdom (Heal) check is required to tell that an unconscious galate is not dead. A galate can feign death as a bonus action.
Innate Spellcasting. The galate’s spellcasting ability is Charisma (spell save DC 17). The galate can innately cast the following spells, requiring no material components:
At will: dream, see invisibility
3/day each: eyebite (asleep only), invisibility, fly, sleep, teleport
1/day each: phantasmal killer, suggestion
Night Terrors. A galate can automatically succeed on one attack a round made against a creature affected by its dream spell. The galate can make this attack from any distance and through any barrier, so long as it is on the same plane as the target affected by its dream spell.

ACTIONS
Multiattack. The galate makes four attacks: one with its gore, two with its claws, and one with its tail. Alternatively, it makes one attack and casts one spell.
Gore. Melee Weapon Attack: +10 to hit, reach 5 ft., one target.
Hit: 15 (2d8+6) piercing damage.
Claw. Melee Weapon Attack: +10 to hit, reach 10 ft., one target.
Hit: 8 (1d10+3) slashing damage. If the target is a Large or smaller creature, it is grappled (escape DC 16). The galate has two claws, each of which can grapple only one target.
Tail. Melee Weapon Attack: +10 to hit, one target.
Hit: 10 (2d6+3) bludgeoning damage.

[Submitted by Tim Snow!]