Shadow

Medium undead, chaotic evil

Armor Class: 12
Hit Points: 16 (3d8 + 3)
Speed: 40 ft.

STR: 6 (−2)
DEX: 14 (+2)
CON: 13 (+1)
INT: 6 (−2)
WIS: 10 (+0)
CHA: 8 (−1)

Skills: Stealth +4 (+6 in dim light or darkness)
Damage Vulnerabilities: radiant
Damage Resistances: acid, cold, fire, lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities: necrotic, poison
Condition Immunities: exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained
Senses: darkvision 60 ft., passive Perception 10
Languages: —
Challenge: 1/2 (100 XP)

Amorphous. The shadow can move through a space as narrow as 1 inch wide without squeezing.

Shadow Stealth. While in dim light or darkness, the shadow can take the Hide action as a bonus action.

Sunlight Weakness. While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws.

Actions

Strength Drain. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 9 (2d6 + 2) necrotic damage, and the target's Strength score is reduced by 1d4. The target dies if this reduces its Strength to 0. Otherwise, the reduction lasts until the target finishes a short or long rest. If a non-evil humanoid dies from this attack, a new shadow rises from the corpse 1d4 hours later.

Running this fight? Add the shadow to the initiative tracker: type its name and the AC, hit points and initiative bonus fill in, and the book button shows this stat block mid-fight.