Medium aberration, chaotic neutral

• Armor Class 12 (natural armor)
• Hit Points 43 (5d10+5)
• Speed 10 ft., fly 40 ft.

• Damage Immunities thunder
• Condition Immunities prone
• Senses darkvision 60 ft., passive Perception 12
• Languages Deep Speech, Undercommon
• Challenge 4

Damage Transfer. While attached to a creature, the cloaker takes only half the damage dealt to it (rounded down), and that creature takes the other half.

Small Fey, Typically Chaotic Neutral

• Armor Class 14 (leather armor)
• Hit Points 13 (3d6 + 3)
• Speed 30 ft.

• Skills Acrobatics +5, Deception +2, Perception +5, Stealth +7
• Senses Blindsight 30 ft., Darkvision 120 ft., Passive Perception 15
• Languages Elvish, Sylvan
• Challenge 1/2 (100 XP)

Death Flash. When the darkling dies, nonmagical light flashes out from it in a 10-foot radius as its body and possessions, other than metal or magic objects, burn to ash. Any creature in that area and able to see the bright light must succeed on a DC 10 Constitution saving throw or be blinded until the end of the creature’s next turn.

Medium Fey, Typically Chaotic Neutral

• Armor Class 15 (studded leather armor)
• Hit Points 27 (5d8 + 5)
• Speed 30 ft.

• Skills Acrobatics +5, Deception +3, Perception +6, Stealth +7
• Senses Blindsight 30 ft., Darkvision 120 ft., Passive Perception 16
• Languages Elvish, Sylvan
• Challenge 2 (450 XP)

Death Burn. When the darkling elder dies, magical light flashes out from it in a 10-foot radius as its body and possessions, other than metal or magic objects, burn to ash. Any creature in that area must make a DC 11 Constitution saving throw. On a failed save, the creature takes 7 (2d6) radiant damage and is blinded until the end of its next turn. On a successful save, the creature takes half as much damage and isn’t blinded.

Tiny undead, neutral evil

• Armor Class 13
• Hit Points 40 (9d4 + 18)
• Speed 0 ft., fly 40 ft. (hover)

• Skills Arcana +5, Perception +2
• Damage Resistances Lightning, Necrotic, Piercing
• Damage Immunities Cold, Fire, Poison
• Condition Immunities Charmed, Frightened, Paralyzed, Poisoned, Prone
• Senses Darkvision 60 ft., passive Perception 12
• Languages Common
• Challenge 4 (1,100 XP)
• Proficiency Bonus +2

Actions

• Multiattack. The flameskull uses Fire Ray twice.
• Fire Ray. Ranged Spell Attack: +5 to hit, range 30 ft., one target. Hit: 10 (3d6) fire damage.

Special Abilities

• Illumination. The flameskull sheds either dim light in a 15-foot radius, or bright light in a 15-foot radius and dim light for an additional 15 feet. It can switch between the options as an action.
• Magic Resistance. The flameskull has advantage on saving throws against spells and other magical effects.
• Rejuvenation. If the flameskull is destroyed, it regains all its hit points in 1 hour unless holy water is sprinkled on its remains or a Dispel Magic or Remove Curse spell is cast on them.
• Spellcasting. The flameskull is a 5th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 13, +5 to hit with spell attacks). It requires no somatic or material components to cast its spells. The flameskull has the following wizard spells prepared:
  • Cantrip (at will): mage hand
  • 1st level (3 slots): magic missile, shield
  • 2nd level (2 slots): blur, flaming sphere
  • 3rd level (1 slot): fireball

Spells

Magic Missile

1st-level evocation

Small Beast, Unaligned

Armor Class 12 Hit Points 7 (2d6) Speed 30 ft.

Skills Perception +2Senses Darkvision 60 ft., passive Perception 10Languages –Challenge 1/8 (25 XP)

Keen Smell. The rat has advantage on Wisdom (Perception) checks that rely on smell.Pack Tactics. The rat has advantage on an attack roll against a creature if at least one of the rat’s allies is within 5 feet of the creature and the ally isn’t incapacitated.