Young Silver Dragon

Large dragon, lawful good

Armor Class 18 (natural armor)
Hit Points 168 (16d10 + 80)
Speed 40 ft., fly 80 ft.

STR	DEX	CON	INT	WIS	CHA
23 (+6)	10 (+0)	21 (+5)	14 (+2)	11 (+0)	19 (+4)

Saving Throws Dex +4, Con +9, Wis +4, Cha +8
Skills Arcana +6, History +6, Perception +8, Stealth +4
Damage Immunities cold
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 18
Languages Common, Draconic
Challenge 9 (5,000 XP)

Actions

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage.
Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.
Breath Weapons (Recharge 5–6). The dragon uses one of the following breath weapons.
Cold Breath. The dragon exhales an icy blast in a 30-foot cone. Each creature in that area must make a DC 17 Constitution saving throw, taking 54 (12d8) cold damage on a failed save, or half as much damage on a successful one.
Paralyzing Breath. The dragon exhales paralyzing gas in a 30-foot cone. Each creature in that area must succeed on a DC 17 Constitution saving throw or be paralyzed 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.

Young Blue Dragon

Large dragon, lawful evil

Armor Class 18 (natural armor)
Hit Points 152 (16d10 + 64)
Speed 40 ft., burrow 20 ft., fly 80 ft.

STR	DEX	CON	INT	WIS	CHA
21 (+5)	10 (+0)	19 (+4)	14 (+2)	13 (+1)	17 (+3)

Saving Throws Dex +4, Con +8, Wis +5, Cha +7
Skills Perception +9, Stealth +4
Damage Immunities lightning
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 19
Languages Common, Draconic
Challenge 9 (5,000 XP)

Actions

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 5 (1d10) lightning damage.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.
Lightning Breath (Recharge 5–6). The dragon exhales lightning in an 60-­‐foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 55 (10d10) lightning damage on a failed save, or half as much damage on a successful one.

Treant

Huge plant, chaotic good

Armor Class 16 (natural armor)
Hit Points 138 (12d12 + 60)
Speed 30ft.

STR	DEX	CON	INT	WIS	CHA
23 (+6)	8 (-1)	21 (+5)	12 (+1)	16 (+3)	12 (+1)

Damage Resistances bludgeoning, piercing
Damage Vulnerabilities fire
Senses passive Perception 13
Languages Common, Druidic, Elvish, Sylvan
Challenge 9 (5,000 XP)

False Appearance. While the treant remains motionless, it is indistinguishable from a normal tree.
Siege Monster. The treant deals double damage to objects and structures.

Actions

Multiattack. The treant makes two slam attacks.
Slam. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 16 (3d6 + 6) bludgeoning damage.
Rock. Ranged Weapon Attack: +10 to hit, range 60/180 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.
Animate Trees (1/Day). The treant magically animates one or two trees it can see within 60 feet of it. These trees have the same statistics as a treant, except they have Intelligence and Charisma scores of 1, they can’t speak, and they have only the Slam action option. An animated tree acts as an ally of the treant. The tree remains animate for 1 day or until it dies; until the treant dies or is more than 120 feet from the tree; or until the treant takes a bonus action to turn it back into an inanimate tree. The tree then takes root if possible.

Glabrezu

Large fiend (demon), chaotic evil

Armor Class 17 (natural armor)
Hit Points 157 (15d10 + 75)
Speed 40 ft.

STR	DEX	CON	INT	WIS	CHA
20 (+5)	15 (+2)	21 (+5)	19 (+4)	17 (+3)	16 (+3)

Saving Throws Str +9, Con +9, Wis +7, Cha +7
Damage Resistances cold, fire, lightning; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities poisoned
Senses truesight 120 ft., passive Perception 13
Languages Abyssal, telepathy 120 ft.
Challenge 9 (5,000 XP)

Innate Spellcasting. The glabrezu’s spellcasting ability is Intelligence (spell save DC 16). The glabrezu can innately cast the following spells, requiring no material components:
At will: darkness, detect magic, dispel magic
1/day each: confusion, fly, power word stun
Magic Resistance. The glabrezu has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The glabrezu makes four attacks: two with its pincers and two with its fists. Alternatively, it makes two attacks with its pincers and casts one spell.
Pincer. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) bludgeoning damage. If the target is a Medium or smaller creature, it is grappled (escape DC 15). The glabrezu has two pincers, each of which can grapple only one target.
Fist. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) bludgeoning damage.

Fire Giant

Huge giant, lawful evil

Armor Class 18 (plate)
Hit Points 162 (13d12 + 78)
Speed 30 ft.

STR	DEX	CON	INT	WIS	CHA
25 (+7)	9 (−1)	23 (+6)	10 (+0)	14 (+2)	13 (+1)

Saving Throws Dex +3, Con +10, Cha +5
Skills Athletics +11, Perception +6
Damage Immunities fire
Senses passive Perception 16
Languages Giant
Challenge 9 (5,000 XP)

Actions

Multiattack. The giant makes two greatsword attacks.
Greatsword. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 28 (6d6 + 7) slashing damage.
Rock. Ranged Weapon Attack: +11 to hit, range 60/240 ft., one target. Hit: 29 (4d10 + 7) bludgeoning damage.

Cloud Giant

Huge giant, neutral good (50%) or neutral evil (50%)

Armor Class 14 (natural armor)
Hit Points 200 (16d12 + 96)
Speed 40 ft.

STR	DEX	CON	INT	WIS	CHA
27 (+8)	10 (+0)	22 (+6)	12 (+1)	16 (+3)	16 (+3)

Saving Throws Con +10, Wis +7, Cha +7
Skills Insight +7, Perception +7
Senses passive Perception 17
Languages Common, Giant
Challenge 9 (5,000 XP)

Keen Smell. The giant has advantage on Wisdom (Perception) checks that rely on smell.
Innate Spellcasting. The giant’s innate spellcasting ability is Charisma. It can innately cast the following spells, requiring no material components:
At will: detect magic, fog cloud, light
3/day each: feather fall, fly, misty step, telekinesis
1/day each: control weather, gaseous form

Actions

Multiattack. The giant makes two morningstar attacks.
Morningstar. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 21 (3d8 + 8) piercing damage.
Rock. Ranged Weapon Attack: +12 to hit, range 60/240 ft., one target. Hit: 30 (4d10 + 8) bludgeoning damage.

Clay Golem

Large construct, unaligned

Armor Class 14 (natural armor)
Hit Points 133 (14d10 + 56)
Speed 20 ft.

STR	DEX	CON	INT	WIS	CHA
20 (+5)	9 (−1)	18 (+4)	3 (−4)	8 (−1)	1 (−5)

Damage Immunities acid, poison, psychic; bludgeoning, piercing, and slashing from nonmagical attacks that aren’t adamantine
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 60 ft., passive Perception 9
Languages understands the languages of its creator but can’t speak
Challenge 9 (5,000 XP)

Acid Absorption. Whenever the golem is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt.
Berserk. Whenever the golem starts its turn with 60 hit points or fewer, roll a d6. On a 6, the golem goes berserk. On each of its turns while berserk, the golem attacks the nearest creature it can see. If no creature is near enough to move to and attack, the golem attacks an object, with preference for an object smaller than itself. Once the golem goes berserk, it continues to do so until it is destroyed or regains all its hit points.
Immutable Form. The golem is immune to any spell or effect that would alter its form.
Magic Resistance. The golem has advantage on saving throws against spells and other magical effects.
Magic Weapons. The golem’s weapon attacks are magical.

Actions

Multiattack. The golem makes two slam attacks.
Slam. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) bludgeoning damage. If the target is a creature, it must succeed on a DC 15 Constitution saving throw or have its hit point maximum reduced by an amount equal to the damage taken. The target dies if this attack reduces its hit point maximum to 0. The reduction lasts until removed by the greater restoration spell or other magic.
Haste (Recharge 5–6). Until the end of its next turn, the golem magically gains a +2 bonus to its AC, has advantage on Dexterity saving throws, and can use its slam attack as a bonus action.

Bone Devil

Large fiend (devil), lawful evil

Armor Class 19 (natural armor)
Hit Points 142 (15d10 + 60)
Speed 40 ft., fly 40 ft.

STR	DEX	CON	INT	WIS	CHA
18 (+4)	16 (+3)	18 (+4)	13 (+1)	14 (+2)	16 (+3)

Saving Throws Int +5, Wis +6, Cha +7
Skills Deception +7, Insight +6
Damage Resistances cold; bludgeoning, piercing, and slashing from nonmagical attacks that aren’t silvered
Damage Immunities fire, poison
Condition Immunities poisoned
Senses darkvision 120 ft., passive Perception 12
Languages Infernal, telepathy 120 ft.
Challenge 9 (5,000 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 attacks: two with its claws and one with its sting.
Claw. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 8 (1d8 + 4) slashing damage.
Sting. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) piercing damage plus 17 (5d6) poison damage, and the target must succeed on a DC 14 Constitution saving throw or become poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.