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Medium undead, chaotic evil
Skills Stealth +4 (+6 in dim light or darkness)
Amorphous. The shadow can move through a space as narrow as 1 inch wide without squeezing.
Sunlight Weakness. While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws.
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.
Shadows are undead that resemble dark exaggerations of humanoid shadows.
Dark Disposition. From the darkness, the shadow reaches out to feed on living creatures' vitality. They can consume any living creature, but they are especially drawn to creatures untainted by evil. A creature that lives a life of goodness and piety consigns its basest impulses and strongest temptations to the darkness where the shadows hunger. As a shadow drains its victim's strength and physical form, the victim's shadow darkens and begins to move of its own volition. In death, the creature's shadow breaks free, becoming a new undead shadow hungry for more life to consume.
Undead Nature. A shadow doesn't require air, food, drink, or sleep.