Parasitic Tattoo

Alter: As an action, you can speak the tattoo’s command word to make it detach from your skin as inky parasites and burrow into a willing creature within 5 feet of you. The creature takes 2d6 piercing damage if it is poisoned and an additional 2d6 piercing damage for each disease afflicting it. At the end of your turn, the inky parasites emerge from the creature and return to your skin. The creature that was burrowed into is cured of any diseases and the poisoned condition. Once this special action is used, it can’t be used again until an hour has passed.
If the tattoo has been used to end disease or poison in another creature, you can use an action to speak the tattoo’s second command word to regain 2d6 hit points. This property of the tattoo can’t be used again until after the tattoo is used to end another disease or the poisoned condition.

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.
This tattoo is cursed. Attuning to it curses you until you are targeted by a remove curse spell or similar magic. As long as you remain cursed, you cannot unattune from the tattoo. Once unattuned, the tattoo gradually fades, leaving the bearer poisoned for 1d4 days.

Materials/cost: 284gp
Placement: Torso
Rarity: Uncommon
Produced by a special needle, this magic tattoo symbolizes purification.

In order to craft this tattoo, you would need to gather a pair of easily located but aggressive parasites known for burrowing deep into their hosts to prevent extraction. No tattooist has ever let slip whether the creature components and the inky parasites that emerge from the tattoo after it is activated are one and the same. The very thought is what many believe have led to this tattoo being one of the most unpopular designs on the market.