Claw Tattoo: Great Worm Totem of Uthgar

Magical Strikes. While the tattoo is on your skin, your unarmed strikes and natural attacks 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 & natural attacks

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, natural attack, 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 attacks deal an extra 1d6 force damage on a hit. Once used, this bonus action can’t be used again until the next dawn.