Tattoo of Power (5e Equipment)
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Wondrous item, very rare (requires attunement by a monk)
This tattoo draw the channels of flowing chi on your body, from your core to your fists. 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 +2 bonus to attack and damage rolls with unarmed strikes.
You also you gain a +2 bonus to your Unarmored AC, saving throws, and spell attack rolls (for sun soul and four elements monks).
The tattoo has 20 charges for the following properties. The tattoo regains 2d8 + 4 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the tattoo retains its +2 bonus to attack and damage rolls but loses all other properties. On a 20, the tattoo regains 1d8 + 2 charges.
Chi Infused Strike. When you hit a creature with a unarmed strike, you can expend 1 charge to deal additional 1d6 damage to the target.
Ki Features. You can expend 1 or more of this tattoo charges to use any of your Monk class features that require KI, by expending the same amount of charges, using your Ki save DC and spell attack bonus.
Tattoo Spells. You can also use these charges to cast one of the following spells. If the spell requires a save DC, use your Ki save DC. If it requires a spell attack roll, use your unarmed strike bonus instead: jump (1 charge), zephyr strike (1 charge), haste (3 charges), greater invisibility (4 charges), stoneskin (4 charges), enhance ability (2 charges), steel wind strike (5 charges), shatter (5th-level version, 5 charges), hold monster (5 charges).
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 you have multiple magic tattoos, they count as a single magic item with regard to the number of magic items you can attune to. If your attunement to the tattoo ends, the tattoo vanishes, and the needle reapears in the closest unoccupied space to you.