Arcane Devourer

Medium fiend (titanspawn), neutral evil

STR	DEX	CON	INT	WIS	CHA
17 (+3)	16 (+3)	19 (+4)	16 (+3)	14 (+2)	11 (+0)

Armor Class 15 (natural armor)
Hit Points 93 (11d8 + 44)
Speed 30 ft., climb 30 ft.
Skills Arcana +9, Perception +5, Stealth +6
Damage Resistances psychic; bludgeoning, piercing, and slashing from nonmagical weapons
Damage Immunities cold, poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned
Senses darkvision 60 ft., passive Perception 15
Languages Understands Infernal, Primordial, Titan Speech but cannot speak; telepathy 90 ft.
Challenge 5 (1,800 XP)

Special Traits

• Illumination. The arcane devourer sheds bright light in a 5-foot radius and dim light for an additional 5 feet. It can activate or suppress this feature at the start of its turn (no action required).
• Innate Spellcasting. The arcane devourer’s spellcasting ability is Intelligence (spell save DC 14). It can innately cast the following spells, requiring no material components.
  • At will: counterspell, identify, see invisibility
  • 3/day: flash, plane shift (self only)
• • Magic Resistance. The arcane devourer has advantage on saving throws against spells and other magical effects.
  • Sense Magic. An arcane devourer can automatically sense magic and discern the location of any creature capable of casting spells within 60 feet.

Actions

• Multiattack. The arcane devourer makes two claw attacks.
• Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage plus 7 (2d6) force damage.
• Draining Slash. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage plus 7 (2d6) force damage, and if the target is a spellcaster, the target is drained of 1d3 unused spell slots, beginning with those of the highest level and moving down. If the target has no spell slots remaining or is not a spellcaster, then the highest-level spell or magical effect active upon the target is drained instead, ending as if the arcane devourer had cast dispel magic on it successfully.

Tactics

An arcane devourer typically uses its ability to sense magic, ideally from hiding, before engaging enemies. That way, it can focus on the target using the most powerful spells or bearing the most powerful magic. They are intelligent adversaries and will retreat from a hopeless battle, using plane shift if necessary, but always stealing as much magic as they can before doing so.

Description

Arcane devourers travel the astral and material planes searching out magical energies, and thus are attracted to arcane spellcasters and magic items that store and discharge such energy. An arcane devourer appears as a tall, scaled humanoid with elongated limbs and digits, its supple fingers and toes ending in deadly talons. Its eyes glow, and its back is covered in crystalline cysts that also glimmer faintly. A typical devourer stands 6 to 7 feet tall and weighs 175 pounds.