Arcane Lock Tattoo

This simple tattoo appears a small intricate padlock when etched onto the skin.  If you unattune from the tattoo, the ink lifts up and condenses into a small thin needle.

Lockpicking Savant.  While you have the tattoo on your skin, you have advantage on all Sleight of Hand checks to pick locks.

Safety Behind Locked Doors.  Once per long rest, you can empower the tattoo to cast the arcane lock spell, with limitations bound strictly to closed doors and windows.  Unlike the spell, your arcane lock spell lasts for up to 8 hours and can be dispelled earlier if you wish to dispel the arcane lock.

Notes: Advantage: Sleight of Hand, Utility, Warding