Umbra’s Mantle

Wondrous item, very rare (requires attunement)

This item is one of a pair of malignant weapons made of dark leather and metal imbued with infernal magic. The other item is Umbra’s Claw. Separate, each is dangerous and fearsome but when combined as they were destined to be, their fell magic awakens, making them deadlier still. If a character is attuned to both claw and cloak, both become Awakened and gain various improvements.

This magic cloak is infused with shadow and brimstone. It has the following magical properties:

• While wearing this cloak in dim light or darkness, you can use a bonus action to teleport up to 30 feet to an unoccupied space you can see that is also dim light or darkness.
• As an action, you can transform your shadow into a shadowmire shade. The shade takes its turn in combat directly after yours and obeys your telepathic commands (no action required). While your shadow is transformed in this way, you must make a DC 13 Constitution saving throw at the start of each of your turns. On a failed save, you suffer one level of exhaustion. The shade remains until it is reduced to 0 hit points or you dismiss it as a bonus action. When it disappears, you regain your shadow. All levels of exhaustion suffered by this property are removed once you finish a short or long rest.

Awakened. When the cloak reaches an Awakened state, it gains the following properties:

• While wearing this cloak in dim light or darkness, you have advantage on ability checks and saving throws that use Strength or Dexterity.
• When you use the cloak to teleport, you can cause a cloud of shadowy smoke to surround you in a 5-footradius sphere where you appear. The cloud heavily obscures the area. A strong wind disperses the cloud, which otherwise remains there until the start of your next turn.