Boots of Sinister Shadow

Wondrous item, very rare (requires attunement)

These simple boots infuse the wearer’s shadow with a disturbing, otherworldly aura and a nightmarish aspect.

You can control your shadow, cloaking your movements and granting you advantage on Dexterity (Stealth) checks in normal or dim light.

You also can manipulate your shadow into different shapes.

This functions as minor illusion but cannot create sound, and images you create must remain adjacent to the ground or a wall and are connected to you by a line of shadow. When you make a Charisma (Intimidation) check, as a bonus action you can cause your shadow to rear up into a horrific shape, granting you advantage on your check against creatures with Intelligence 5 or greater.

As an action, you can attempt to make your shadow cross the shadow of an enemy. Treat this as a melee spell attack with a reach of 5 feet in normal or dim light and 10 feet in bright light. If the attack hits, the target perceives its own shadow rising up as a monstrous abomination equivalent to phantasmal killer (DC 16). After using this ability, you cannot use it again until you complete a long rest.

These boots are powerless in total darkness or against blind creatures.