Skills Perception +3, Stealth +7
Blindsight 10 ft
Darkvision 60 ft

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

Web Sense While in contact with a web, the spider knows the exact location of any other creature in contact with the same web

Web Walker The spider ignores movement restrictions caused by webbing

ActionsBite Melee Weapon Attack +3 to hit, reach 5 ft., one creature. Hit: 1d6 + 1 piercing damage, and the target must make a DC 11 Constitution saving throw, taking 2d6 poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way

Skills Perception +3, Stealth +4
Blindsight 10 ft
Darkvision 60 ft

Keen Senses The pseudodragon has advantage on Wisdom (Perception) checks that rely on sight, hearing, or smell.
Limited Telepathy The pseudodragon can magically communicate simple ideas, emotions, and images telepathically with any creature within 100 feet of it that can understand a language.
Magic Resistance The pseudodragon has advantage on saving throws against spells and other magical effects.
ActionsBite Melee Weapon Attack +4 to hit, reach 5 ft., one target. Hit: 1d4 + 2 piercing damage.
Sting Melee Weapon Attack +4 to hit, reach 5 ft., one creature. Hit: 1d4 + 2 piercing damage, and the target must succeed on a DC 11 Constitution saving throw or become poisoned for 1 hour. If the saving throw fails by 5 or more, the target falls unconscious for the same duration, or until it takes damage or another creature uses an action to shake it awake.

Skills Perceptions +3, Stealth +8

ActionsLongsword Melee Weapon Attack +2 to hit, reach 5 ft., one target. Hit: 1 slashing damage.
Shortbow Ranged Weapon Attack +6 to hit, range 40/160 ft., one target. Hit: 1 piercing damage, and the target must succeed on a DC 10 Constitution saving throw or become poisoned for 1 minute. If its saving throw result is 5 or lower, the poisoned target falls unconscious for the same duration, or until it takes damage or another creature takes an action to shake it awake.
Heart Sight The sprite touches a creature and magically knows the creature's current emotional state. If the target fails a DC 10 Charisma saving throw, the sprite also knows the creature's alignment. Celestials, fiends, and undead automatically fail the saving throw.
Invisibility The sprite magically turns invisible until it attacks or casts a spell, or until its concentration ends (as if concentrating on a spell). Any equipment the sprite wears or carries is invisible with it.

Skills Stealth +7
Blindsight 10 ft
Darkvision 60 ft

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

Web Sense While in contact with a web, the spider knows the exact location of any other creature in contact with the same web

Web Walker The spider ignores movement restrictions caused by webbing

ActionsBite Melee Weapon Attack +5 to hit, reach 5 ft., one creature. Hit: 1d8 + 3 piercing damage, and the target must make a DC 11 Constitution saving throw, taking 2d8 poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way

Web (Recharge 5–6) Ranged Weapon Attack +5 to hit, range 30/60 ft., one creature. Hit: The target is restrained by webbing. As an action, the restrained target can make a DC 12 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage)

Darkvision 30 ft.

Amphibious The toad can breathe air and water

Standing Leap The toad's long jump is up to 20 feet and its high jump is up to 10 feet, with or without a running start

ActionsBite Melee Weapon Attack +4 to hit, reach 5 ft., one target. Hit: 1d10 + 2 piercing damage plus 1d10 poison damage, and the target is grappled (escape DC 13). Until this grapple ends, the target is restrained, and the toad can't bite another target

Swallow The toad makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is swallowed, and the grapple ends. The swallowed target is blinded and restrained, it has total cover against attacks and other effects outside the toad, and it takes 3d6 acid damage at the start of each of the toad's turns. The toad can have only one target swallowed at a time

If the toad dies, a swallowed creature is no longer restrained by it and can escape from the corpse using 5 feet of movement, exiting prone

Skills Deception +4, Insight +3, Persuasion +4, Stealth +5
Damage Resistances cold; bludgeoning, piercing, and slashing from nonmagical attacks not made with silvered weapons
Damage Immunities fire, poison
Condition Immunities poisoned
Darkvision 120 ft

Shapechanger The imp can use its action to polymorph into a beast form that resembles a rat (speed 20 ft.), a raven (20 ft., fly 60 ft.), or a spider (20 ft., climb 20 ft.), or back into its true form. Its statistics are the same in each form, except for the speed changes noted. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.
Devil's Sight. Magical darkness doesn't impede the imp's darkvision.
Magic Resistance The imp has advantage on saving throws against spells and other magical effects.
ActionsSting(Bite in Beast Form). Melee Weapon Attack +5 to hit, reach 5 ft., one target. Hit: 1d4 + 3 piercing damage, and the target must make a DC 11 Constitution saving throw, taking 3d6 poison damage on a failed save, or half as much damage on a successful one.
Invisibility The imp magically turns invisible until it attacks, or until its concentration ends (as if concentrating on a spell). Any equipment the imp wears or carries is invisible with it.

Skills Perception +3, Stealth +6

Keen Smell The lion has advantage on Wisdom (Perception) checks that rely on smell

Pack Tactics The lion has advantage on an attack roll against a creature if at least one of the lion's allies is within 5 feet of the creature and the ally isn't incapacitated

Pounce If the lion moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 13 Strength saving throw or be knocked prone. If the target is prone, the lion can make one bite attack against it as a bonus action

Running Leap With a 10-foot running start, the lion can long jump up to 25 feet

ActionsBite Melee Weapon Attack +5 to hit, reach 5 ft., one target. Hit: 1d8 + 3 piercing damage

Claw Melee Weapon Attack +5 to hit, reach 5 ft., one target. Hit: 1d6 + 3 slashing damage

Skills Stealth +5
Damage Resistances cold, fire, lightning; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities poisoned
Darkvision 120 ft

Shapechanger The quasit can use its action to polymorph into a beast form that resembles a bat (speed 10 feet fly 40 ft.), a centipede (40 ft., climb 40 ft.), or a toad (40 ft., swim 40 ft.), or back into its true form. Its statistics are the same in each form, except for the speed changes noted. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.
Magic Resistance The quasit has advantage on saving throws against spells and other magical effects.
ActionsClaw(Bite in Beast Form). Melee Weapon Attack +4 to hit, reach 5 ft., one target. Hit: 1d4 + 3 piercing damage, and the target must succeed on a DC 10 Constitution saving throw or take 2d4 poison damage and 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.
Scare(1/Day). One creature of the quasit's choice within 20 feet of it must succeed on a DC 10 Wisdom saving throw or be frightened for 1 minute. The target can repeat the saving throw at the end of each of its turns, with disadvantage if the quasit is within line of sight, ending the effect on itself on a success.
Invisibility The quasit magically turns invisible until it attacks or uses Scare, or until its concentration ends (as if concentrating on a spell). Any equipment the quasit wears or carries is invisible with it.