Wizard’s Shackle

Tiny monstrosity, neutral

Armor Class 11
Hit Points 16 (3d4 + 9)
Speed 5 ft.

STR	DEX	CON	INT	WIS	CHA
1 (-5)	12 (+1)	16 (+3)	1 (-5)	11 (+0)	2 (-4)

Senses blindsight 30 ft., passive Perception 10
Languages –
Challenge 1/2 (100 XP)

Special Traits

• Arcane Sense. A wizard’s shackle can automatically detect the location of any active spell or magical item within 30 feet not hidden behind 10 feet of dirt, 5 feet of stone, 1 foot of common metal, or 5 inches of lead.
• Magic Resistance. The wizard’s shackle has advantage on saving throws against spells and magical effects.

Actions

• Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 3 (1d4 + 1) piercing damage and the wizard’s shackle attaches to the target. While it is attached, any time the target attempts to cast a cantrip or spell, it takes 10 (3d6) psychic damage and must make a DC 10 Constitution saving throw. On a failed saving throw, the target fails to cast the spell and if a spell slot was used, it is wasted. The wizard’s shackle can be removed as an action by the target or another creature. If a creature or creature to which the wizard’s shackle is attached attempts to remove the wizard’s shackle, the attached target must succeed on a DC 13 Constitution saving throw. On a failed saving throw, the target is unconscious for 1 minute.

About

This tiny creature appears to be a gray-green leech.

The wizard’s shackle is a 6-inch long, leech-like creature. Though it is small in size, it is greatly feared by spellcasters, for its bite drains arcane magic from a caster’s mind. In some rare instances, evil spellcasters have harvested these monsters and set them loose in an enemy spellcaster’s tower or laboratory.

A wizard’s shackle attacks from ambush. It favors hiding on ledges, bookshelves, doors, and other such places where it can drop on spellcasters that pass underneath it. A wizard’s shackle injects an anesthetic when it bites, so it is possible that its bite goes unnoticed (DC 12 Perception check to notice).