Roc

Gargantuan monstrosity, unaligned

Armor Class 15 (natural armor)
Hit Points 248 (16d20 + 80)
Speed 20 ft., fly 120 ft.

STR	DEX	CON	INT	WIS	CHA
28 (+9)	10 (+0)	20 (+5)	3 (−4)	10 (+0)	9 (−1)

Saving Throws Dex +4, Con +9, Wis +4, Cha +3
Skills Perception +4
Senses passive Perception 14
Languages —
Challenge 11 (7,200 XP)

Keen Sight. The roc has advantage on Wisdom (Perception) checks that rely on sight.

Actions

Multiattack. The roc makes two attacks: one with its beak and one with its talons.
Beak. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 27 (4d8 + 9) piercing damage.
Talons. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 23 (4d6 + 9) slashing damage, and the target is grappled (escape DC 19). Until this grapple ends, the target is restrained, and the roc can’t use its talons on another target.

Remorhaz

Huge monstrosity, unaligned

Armor Class 17 (natural armor)
Hit Points 195 (17d12 + 85)
Speed 30 ft., burrow 20 ft.

STR	DEX	CON	INT	WIS	CHA
24 (+7)	13 (+1)	21 (+5)	4 (−3)	10 (+0)	5 (−3)

Damage Immunities cold, fire
Senses darkvision 60 ft., tremorsense 60 ft., passive Perception 10
Languages —
Challenge 11 (7,200 XP)

Heated Body. A creature that touches the remorhaz or hits it with a melee attack while within 5 feet of it takes 10 (3d6) fire damage.

Actions

Bite. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 40 (6d10 + 7) piercing damage plus 10 (3d6) fire damage. If the target is a creature, it is grappled (escape DC 17). Until this grapple ends, the target is restrained, and the remorhaz can’t bite another target.
Swallow. The remorhaz makes one bite attack against a Medium or smaller creature it is grappling. If the attack hits, that creature takes the bite’s damage and is swallowed, and the grapple ends. While swallowed, the creature is blinded and restrained, it has total cover against attacks and other effects outside the remorhaz, and it takes 21 (6d6) acid damage at the start of each of the remorhaz’s turns.
If the remorhaz takes 30 damage or more on a single turn from a creature inside it, the remorhaz must succeed on a DC 15 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the remorhaz. If the remorhaz dies, a swallowed creature is no longer restrained by it and can escape from the corpse using 15 feet of movement, exiting prone.

Horned Devil

Large fiend (devil), lawful evil

Armor Class 18 (natural armor)
Hit Points 148 (17d10 + 55)
Speed 20 ft., fly 60 ft.

STR	DEX	CON	INT	WIS	CHA
22 (+6)	17 (+3)	21 (+5)	12 (+1)	16 (+3)	17 (+3)

Saving Throws Str +10, Dex +7, Wis +7, Cha +7
Damage Resistances cold; bludgeoning, piercing, and slashing from nonmagical attacks not made with silvered weapons
Damage Immunities fire, poison
Condition Immunities poisoned
Senses darkvision 120 ft., passive Perception 13
Languages Infernal, telepathy 120 ft.
Challenge 11 (7,200 XP)

Devil’s Sight. Magical darkness doesn’t impede the devil’s darkvision.
Magic Resistance. The devil has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The devil makes three melee attacks: two with its fork and one with its tail. It can use Hurl Flame in place of any melee attack.
Fork. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 15 (2d8 + 6) piercing damage.
Tail. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 10 (1d8 + 6) piercing damage. If the target is a creature other than an undead or a construct, it must succeed on a DC 17 Constitution saving throw or lose 10 (3d6) hit points at the start of each of its turns due to an infernal wound. Each time the devil hits the wounded target with this attack, the damage dealt by the wound increases by 10 (3d6). Any creature can take an action to stanch the wound with a successful DC 12 Wisdom (Medicine) check. The wound also closes if the target receives magical healing.
Hurl Flame. Ranged Spell Attack: +7 to hit, range 150 ft., one target. Hit: 14 (4d6) fire damage. If the target is a flammable object that isn’t being worn or carried, it also catches fire.

Gynosphinx

Large monstrosity, lawful neutral

Armor Class 17 (natural armor)
Hit Points 136 (16d10 + 48)
Speed 40 ft., fly 60 ft.

STR	DEX	CON	INT	WIS	CHA
18 (+4)	15 (+2)	16 (+3)	18 (+4)	18 (+4)	18 (+4)

Skills Arcana +12, History +12, Perception +8, Religion +8
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities psychic
Condition Immunities charmed, frightened
Senses truesight 120 ft., passive Perception 18
Languages Common, Sphinx
Challenge 11 (7,200 XP)

Inscrutable. The sphinx is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses. Wisdom (Insight) checks made to ascertain the sphinx’s intentions or sincerity have disadvantage.
Magic Weapons. The sphinx’s weapon attacks are magical.
Spellcasting. The sphinx is a 9th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 16, +8 to hit with spell attacks). It requires no material components to cast its spells. The sphinx has the following wizard spells prepared:
Cantrips (at will): mage hand, minor illusion, prestidigitation
1st level (4 slots): detect magic, identify, shield
2nd level (3 slots): darkness, locate object, suggestion
3rd level (3 slots): dispel magic, remove curse, tongues
4th level (3 slots): banishment, greater invisibility
5th level (1 slot): legend lore

Actions

Multiattack. The sphinx makes two claw attacks.
Claw. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage.

Legendary Actions

The sphinx 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’s turn. The sphinx regains spent legendary actions at the start of its turn.
Claw Attack. The sphinx makes one claw attack.
Teleport (Costs 2 Actions). The sphinx magically teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied space it can see.
Cast a Spell (Costs 3 Actions). The sphinx casts a spell from its list of prepared spells, using a spell slot as normal.

Djinni

Large elemental, chaotic good

Armor Class 17 (natural armor)
Hit Points 161 (14d10 + 84)
Speed 30 ft., fly 90 ft.

STR	DEX	CON	INT	WIS	CHA
21 (+5)	15 (+2)	22 (+6)	15 (+2)	16 (+3)	20 (+5)

Saving Throws Dex +6, Wis +7, Cha +9
Damage Immunities lightning, thunder
Senses darkvision 120 ft., passive Perception 13
Languages Auran
Challenge 11 (7,200 XP)

Elemental Demise. If the djinni dies, its body disintegrates into a warm breeze, leaving behind only equipment the djinni was wearing or carrying.
Innate Spellcasting. The djinni’s innate spellcasting ability is Charisma (spell save DC 17, +9 to hit with spell attacks). It can innately cast the following spells, requiring no material components:
At will: detect evil and good, detect magic, thunderwave
3/day each: create food and water (can create wine instead of water), tongues, wind walk
1/day each: conjure elemental (air elemental only), creation, gaseous form, invisibility, major image, plane shift

Actions

Multiattack. The djinni makes three scimitar attacks.
Scimitar. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage plus 3 (1d6) lightning or thunder damage (djinni’s choice).
Create Whirlwind. A 5-foot-radius, 30-foot-tall cylinder of swirling air magically forms on a point the djinni can see within 120 feet of it. The whirlwind lasts as long as the djinni maintains concentration (as if concentrating on a spell). Any creature but the djinni that enters the whirlwind must succeed on a DC 18 Strength saving throw or be restrained by it. The djinni can move the whirlwind up to 60 feet as an action, and creatures restrained by the whirlwind move with it. The whirlwind ends if the djinni loses sight of it.
A creature can use its action to free a creature restrained by the whirlwind, including itself, by succeeding on a DC 18 Strength check. If the check succeeds, the creature is no longer restrained and moves to the nearest space outside the whirlwind.

Behir

Huge monstrosity, neutral evil

Armor Class 17 (natural armor)
Hit Points 168 (16d12 + 64)
Speed 50 ft., climb 40 ft.

STR	DEX	CON	INT	WIS	CHA
23 (+6)	16 (+3)	18 (+4)	7 (-2)	14 (+2)	12 (+1)

Skills Perception +6, Stealth +7
Damage Immunities lightning
Senses darkvision 90 ft., passive Perception 16
Languages Draconic
Challenge 11 (7,200 XP)

Actions

Multiattack. The behir makes two attacks: one with its bite and one to constrict.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 22 (3d10 + 6) piercing damage.
Constrict. Melee Weapon Attack: +10 to hit, reach 5 ft., one Large or smaller creature. Hit: 17 (2d10 + 6) bludgeoning damage plus 17 (2d10 + 6) slashing damage. The target is grappled (escape DC 16) if the behir isn’t already constricting a creature, and the target is restrained until this grapple ends.
Lightning Breath (Recharge 5–6). The behir exhales a line of lightning that is 20 feet long and 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.
Swallow. The behir makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the behir, and it takes 21 (6d6) acid damage at the start of each of the behir’s turns. A behir can have only one creature swallowed at a time.
If the behir takes 30 damage or more on a single turn from the swallowed creature, the behir must succeed on a DC 14 Constitution saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 10 feet of the behir. If the behir dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 15 feet of movement, exiting prone.