Large elemental, lawful evil

Armor Class 17 (natural armor)
Hit Points 200 (16d10 + 112)
Speed 40 ft., fly 60 ft.

STR	DEX	CON	INT	WIS	CHA
22 (+6)	12 (+1)	24 (+7)	16 (+3)	15 (+2)	16 (+3)

Saving Throws Int +7, Wis +6, Cha +7
Skills 
Damage Resistances 
Damage Immunities fire
Condition Immunities 
Senses darkvision 120 ft., passive Perception 12
Languages Ignan
Challenge 11 (7200 XP)

Elemental Demise. If the efreeti dies, its body disintegrates in a flash of fire and puff of smoke, leaving behind only equipment the efreeti was wearing or carrying.

Innate Spellcasting. The efreeti’s innate spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). It can innately cast the following spells, requiring no material components: At will: ““ 3/day: ““, ““ 1/day each: ““ (fire elemental only), ““, ““, ““, ““

Actions

Multiattack. The efreeti makes two scimitar attacks or uses its Hurl Flame twice.

Scimitar. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage plus 7 (2d6) fire damage.

Hurl Flame. Ranged Spell Attack: +7 to hit, range 120 ft., one target. Hit: 17 (5d6) fire damage.

Medium monstrosity (shapechanger), neutral

Armor Class 12 (natural armor)
Hit Points 58 (9d8 + 18)
Speed 15 ft.

STR	DEX	CON	INT	WIS	CHA
17 (+3)	12 (+1)	15 (+2)	5 (-3)	13 (+1)	8 (-1)

Saving Throws 
Skills Stealth +5
Damage Resistances 
Damage Immunities acid
Condition Immunities prone
Senses darkvision 60 ft., passive Perception 11
Languages --
Challenge 2 (450 XP)

Shapechanger. The mimic can use its action to polymorph into an object or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn’t transformed. It reverts to its true form if it dies.

Adhesive (Object Form Only). The mimic adheres to anything that touches it. A Huge or smaller creature adhered to the mimic is also grappled by it (escape DC 13). Ability checks made to escape this grapple have disadvantage.

False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary object.

Grappler. The mimic has advantage on attack rolls against any creature grappled by it.

Actions

Pseudopod. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage. If the mimic is in object form, the target is subjected to its Adhesive trait.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 4 (1d8) acid damage.

Medium undead (shapechanger), lawful evil

Armor Class 16 (natural armor)
Hit Points 144 (17d8 + 68)
Speed 30 ft.

STR	DEX	CON	INT	WIS	CHA
18 (+4)	18 (+4)	18 (+4)	17 (+3)	15 (+2)	18 (+4)

Saving Throws Dex +9, Wis +7, Cha +9
Skills Perception +7, Stealth +9
Damage Resistances necrotic; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities 
Condition Immunities 
Senses darkvision 120 ft., passive Perception 17
Languages the languages it knew in life
Challenge 13 (10000 XP)

Shapechanger. If the vampire isn’t in sunlight or running water, it can use its action to polymorph into a Tiny bat or a Medium cloud of mist, or back into its true form. While in bat form, the vampire can’t speak, its walking speed is 5 feet, and it has a flying speed of 30 feet. Its statistics, other than its size and speed, are unchanged. Anything it is wearing transforms with it, but nothing it is carrying does. It reverts to its true form if it dies. While in mist form, the vampire can’t take any actions, speak, or manipulate objects. It is weightless, has a flying speed of 20 feet, can hover, and can enter a hostile creature’s space and stop there. In addition, if air can pass through a space, the mist can do so without squeezing, and it can’t pass through water. It has advantage on Strength, Dexterity, and Constitution saving throws, and it is immune to all nonmagical damage, except the damage it takes from sunlight.

Legendary Resistance (3/Day). If the vampire fails a saving throw, it can choose to succeed instead.

Misty Escape. When it drops to 0 hit points outside its resting place, the vampire transforms into a cloud of mist (as in the Shapechanger trait) instead of falling unconscious, provided that it isn’t in sunlight or running water. If it can’t transform, it is destroyed. While it has 0 hit points in mist form, it can’t revert to its vampire form, and it must reach its resting place within 2 hours or be destroyed. Once in its resting place, it reverts to its vampire form. It is then paralyzed until it regains at least 1 hit point. After spending 1 hour in its resting place with 0 hit points, it regains 1 hit point.

Regeneration. The vampire regains 20 hit points at the start of its turn if it has at least 1 hit point and isn’t in sunlight or running water. If the vampire takes radiant damage or damage from holy water, this trait doesn’t function at the start of the vampire’s next turn.

Spider Climb. The vampire can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Vampire Weaknesses. The vampire has the following flaws:
Forbiddance. The vampire can’t enter a residence without an invitation from one of the occupants.

Harmed by Running Water. The vampire takes 20 acid damage if it ends its turn in running water.
Stake to the Heart. If a piercing weapon made of wood is driven into the vampire’s heart while the vampire is incapacitated in its resting place, the vampire is paralyzed until the stake is removed. Sunlight Hypersensitivity. The vampire takes 20 radiant damage when it starts its turn in sunlight. While in sunlight, it has disadvantage on attack rolls and ability checks.

Actions

Multiattack (Vampire Form Only). The vampire makes two attacks, only one of which can be a bite attack.

Unarmed Strike (Vampire Form Only). Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 8 (1d8 + 4) bludgeoning damage. Instead of dealing damage, the vampire can grapple the target (escape DC 18).

Bite (Bat or Vampire Form Only). Melee Weapon Attack: +9 to hit, reach 5 ft., one willing creature, or a creature that is grappled by the vampire, incapacitated, or restrained. Hit: 7 (1d6 + 4) piercing damage plus 10 (3d6) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vampire regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0. A humanoid slain in this way and then buried in the ground rises the following night as a vampire spawn under the vampire’s control.

Charm. The vampire targets one humanoid it can see within 30 feet of it. If the target can see the vampire, the target must succeed on a DC 17 Wisdom saving throw against this magic or be charmed by the vampire. The charmed target regards the vampire as a trusted friend to be heeded and protected. Although the target isn’t under the vampire’s control, it takes the vampire’s requests or actions in the most favorable way it can, and it is a willing target for the vampire’s bite attack. Each time the vampire or the vampire’s companions do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 24 hours or until the vampire is destroyed, is on a different plane of existence than the target, or takes a bonus action to end the effect.

Children of the Night (1/Day). The vampire magically calls 2d4 swarms of bats or rats, provided that the sun isn’t up. While outdoors, the vampire can call 3d6 wolves instead. The called creatures arrive in 1d4 rounds, acting as allies of the vampire and obeying its spoken commands. The beasts remain for 1 hour, until the vampire dies, or until the vampire dismisses them as a bonus action.

Legendary Actions

The vampire 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 vampire regains spent legendary actions at the start of its turn.

Move. The vampire moves up to its speed without provoking opportunity attacks.

Unarmed Strike. The vampire makes one unarmed strike.

Bite (Costs 2 Actions). The vampire makes one bite attack.

Medium plant, unaligned

Armor Class 5
Hit Points 18 (4d8)
Speed 5 ft.

STR	DEX	CON	INT	WIS	CHA
3 (-4)	1 (-5)	10 (+0)	1 (-5)	3 (-4)	1 (-5)

Saving Throws 
Skills 
Damage Resistances 
Damage Immunities 
Condition Immunities blinded, deafened, frightened
Senses blindsight 30 ft. (blind beyond this radius), passive Perception 6
Languages --
Challenge 44930 (50 XP)

False Appearance. While the violet fungus remains motionless, it is indistinguishable from an ordinary fungus.

Actions

Multiattack. The fungus makes 1d4 Rotting Touch attacks.

Rotting Touch. Melee Weapon Attack: +2 to hit, reach 10 ft., one creature. Hit: 4 (1d8) necrotic damage.

Medium plant, unaligned

Armor Class 5
Hit Points 13 (3d8)
Speed 0 ft.

STR	DEX	CON	INT	WIS	CHA
1 (-5)	1 (-5)	10 (+0)	1 (-5)	3 (-4)	1 (-5)

Saving Throws 
Skills 
Damage Resistances 
Damage Immunities 
Condition Immunities blinded, deafened, frightened
Senses blindsight 30 ft. (blind beyond this radius), passive Perception 6
Languages --
Challenge 0 (10 XP)

False Appearance. While the shrieker remains motionless, it is indistinguishable from an ordinary fungus.

Reactions

Shriek. When bright light or a creature is within 30 feet of the shrieker, it emits a shriek audible within 300 feet of it. The shrieker continues to shriek until the disturbance moves out of range and for 1d4 of the shrieker’s turns afterward.

Large elemental, neutral

Armor Class 17 (natural armor)
Hit Points 126 (12d10 + 60)
Speed 30 ft., burrow 30 ft.

STR	DEX	CON	INT	WIS	CHA
20 (+5)	8 (-1)	20 (+5)	5 (-3)	10 (+0)	5 (-3)

Saving Throws 
Skills 
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned, unconscious
Senses darkvision 60 ft., tremorsense 60 ft., passive Perception 10
Languages Terran
Challenge 5 (1800 XP)

Earth Glide. The elemental can burrow through nonmagical, unworked earth and stone. While doing so, the elemental doesn’t disturb the material it moves through.

Siege Monster. The elemental deals double damage to objects and structures.

Actions

Multiattack. The elemental makes two slam attacks.

Slam. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 14 (2d8 + 5) bludgeoning damage.

Large elemental, neutral

Armor Class 15
Hit Points 90 (12d10 + 24)
Speed 0 ft., fly 90 ft. (hover)

STR	DEX	CON	INT	WIS	CHA
14 (+2)	20 (+5)	14 (+2)	6 (-2)	10 (+0)	6 (-2)

Saving Throws 
Skills 
Damage Resistances lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities exhaustion, grappled, paralyzed, petrified, poisoned, prone, restrained, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Auran
Challenge 5 (1800 XP)

Air Form. The elemental can enter a hostile creature’s space and stop there. It can move through a space as narrow as 1 inch wide without squeezing.

Actions

Multiattack. The elemental makes two slam attacks.

Slam. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) bludgeoning damage.

Whirlwind (Recharge 4–6). Each creature in the elemental’s space must make a DC 13 Strength saving throw. On a failure, a target takes 15 (3d8 + 2) bludgeoning damage and is flung up 20 feet away from the elemental in a random direction and knocked prone. If a thrown target strikes an object, such as a wall or floor, the target takes 3 (1d6) bludgeoning damage for every 10 feet it was thrown. If the target is thrown at another creature, that creature must succeed on a DC 13 Dexterity saving throw or take the same damage and be knocked prone. If the saving throw is successful, the target takes half the bludgeoning damage and isn’t flung away or knocked prone.

Large elemental, neutral

Armor Class 14 (natural armor)
Hit Points 114 (12d10 + 48)
Speed 30 ft., swim 90 ft.

STR	DEX	CON	INT	WIS	CHA
18 (+4)	14 (+2)	18 (+4)	5 (-3)	10 (+0)	8 (-1)

Saving Throws 
Skills 
Damage Resistances acid; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities exhaustion, grappled, paralyzed, petrified, poisoned, prone, restrained, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Aquan
Challenge 5 (1800 XP)

Water Form. The elemental can enter a hostile creature’s space and stop there. It can move through a space as narrow as 1 inch wide without squeezing.

Freeze. If the elemental takes cold damage, it partially freezes; its speed is reduced by 20 feet until the end of its next turn.

Actions

Multiattack. The elemental makes two slam attacks.

Slam. Melee [yadawiki link=“Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage.

Whelm (Recharge 4–6). Each creature in the elemental’s space must make a DC 15 Strength saving throw. On a failure, a target takes 13 (2d8 + 4) bludgeoning damage. If it is Large or smaller, it is also grappled (escape DC 14). Until this grapple ends, the target is restrained and unable to breathe unless it can breathe water. If the saving throw is successful, the target is pushed out of the elemental’s space. The elemental can grapple one Large creature or up to two Medium or smaller creatures at one time. At the start of each of the elemental’s turns, each target grappled by it takes 13 (2d8 + 4) bludgeoning damage. A creature within 5 feet of the elemental can pull a creature or object out of it by taking an action to make a DC 14 Strength and succeeding.

Large elemental, neutral

Armor Class 13
Hit Points 102 (12d10 + 36)
Speed 50 ft.

STR	DEX	CON	INT	WIS	CHA
10 (+0)	17 (+3)	16 (+3)	6 (-2)	10 (+0)	7 (-2)

Saving Throws 
Skills 
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities fire, poison
Condition Immunities exhaustion, grappled, paralyzed, petrified, poisoned, prone, restrained, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Ignan
Challenge 5 (1800 XP)

Fire Form. The elemental can move through a space as narrow as 1 inch wide without squeezing. A creature that touches the elemental or hits it with a melee attack while within 5 feet of it takes 5 (1d10) fire damage. In addition, the elemental can enter a hostile creature’s space and stop there. The first time it enters a creature’s space on a turn, that creature takes 5 (1d10) fire damage and catches fire; until someone takes an action to douse the fire, the creature takes 5 (1d10) fire damage at the start of each of its turns.

Illumination. The elemental sheds bright light in a 30- foot radius and dim light in an additional 30 feet.

Water Susceptibility. For every 5 feet the elemental moves in water, or for every gallon of water splashed on it, it takes 1 cold damage.

Actions

Multiattack. The elemental makes two touch attacks.

Touch. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) fire damage. If the target is a creature or a flammable object, it ignites. Until a creature takes an action to douse the fire, the target takes 5 (1d10) fire damage at the start of each of its turns.

Gargantuan dragon, chaotic evil

Armor Class 20 (natural armor)
Hit Points 333 (18d20 + 144)
Speed 40 ft., burrow 40 ft., fly 80 ft., swim 40 ft.

STR	DEX	CON	INT	WIS	CHA
26 (+8)	10 (+0)	26 (+8)	10 (+0)	13 (+1)	14 (+2)

Saving Throws Dex +6, Con +14, Wis +7, Cha +8
Skills Perception +13, Stealth +6
Damage Resistances 
Damage Immunities cold
Condition Immunities 
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 23
Languages Common, Draconic
Challenge 20 (25000 XP)

Ice Walk. The dragon can move across and climb icy surfaces without needing to make an ability check. Additionally, difficult terrain composed of ice or snow doesn’t cost it extra moment.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) cold damage.

Claw. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.

Tail. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.

Frightful Presence. Each creature of the dragon’s choice that is within 120 feet of the dragon and aware of it must succeed on a DC 16 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’s saving throw is successful or the effect ends for it, the creature is immune to the dragon’s Frightful Presence for the next 24 hours.

Cold Breath (Recharge 5–6). The dragon exhales an icy blast in a 90-foot cone. Each creature in that area must make a DC 22 Constitution saving throw, taking 72 (16d8) cold damage on a failed save, or half as much damage on a successful one.

Legendary Actions

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’s turn. The dragon regains spent legendary actions at the start of its turn.

Detect. The dragon makes a Wisdom (Perception) check.

Tail Attack. The dragon makes a tail attack.

Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 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.