Inky Form Tattoo

Alter: While this tattoo is applied on your skin, you can use an action to shift into an inky form for the next minute. While in this form, you can move through a space as narrow as 1 inch wide without squeezing. Additionally, you can occupy a creature’s space. You can use a bonus action to end this effect. Once used, this property of the tattoo can’t be used again until an hour has passed.
If you are occupying a creature’s space, you can use your action to attempt to envelop and suffocate that creature. The creature must succeed on a DC 13 Constitution saving throw or become grappled. While grappled, the creature takes 1d8 necrotic damage at the start of each of its turns and can’t breathe. It can use its action to repeat the saving throw, ending the grapple on a success. A creature that doesn’t need to breathe automatically succeeds on this saving throw.

Attunement: To attune to this item, you hold the needle to your skin where you want the tattoo to appear, pressing the needle there throughout the attunement process. When the attunement is complete, the needle turns into the ink that becomes the tattoo, which appears on the skin.
If your attunement to the tattoo ends, the tattoo vanishes, and the needle reappears in your space.

Materials/cost: 200gp
Placement: Torso
Rarity: Uncommon
Produced by a special needle, this magic tattoo represents a being composed entirely of ink.

Shadowborn creatures have long been a nuisance to all who unfortunately run into them; their innate ability to move into otherwise intraversible, tight spaces is universally despised. An aspiring tattooist spent years tailing these creatures as they skittered about, risking life and limb in the process. The tattooist was eventually able to create a design that emulated the creatures’ elusive properties after many years, using ink rather than shadows as the primary element for the formless movement they wished to replicate.