Wondrous item, tattoo, uncommon (requires attunement).
Produced by a special needle, this magic tattoo depicts clawlike forms and other jagged shapes. As an uncommon tattoo, it covers the space of a person's scalp or half an arm or leg.
Tattoo 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.
Magical Strikes. While the tattoo is on your skin,
your unarmed strikes are considered magical for the purpose of
overcoming immunity and resistance to nonmagical attacks, and you gain a
+1 bonus to attack and damage rolls with unarmed strikes.
Eldritch Maul. As a bonus action, you can empower
the tattoo for 1 minute. For the duration, each of your melee attacks
with a weapon or an unarmed strike can reach a target up to 15 feet away
from you, as inky tendrils launch toward the target. In addition, your
melee weapon attacks deal an extra 1d6 force damage on a hit. Once used,
this bonus action can't be used again until the next dawn.