Arcane Tattoo Artist

An individual who takes this feat gains the ability to create a magical tattoo on themselves or another person provided the requirements are met. 

• An enchanted tattoo can contain the power of any spell that the player or assisting spellcaster knows and can be used once per long rest. When the spell is cast from the tattoo it is cast with the artists spell save DC or spell attack modifier. If the spell requires concentration the tattoo will maintain the concentration, allowing the caster to have an additional concentration spell up at once.
• Creating the tattoo is an expensive and time consuming process that is not guaranteed to succeed.  The magical inks required total 500 GP and 1 hour per level of the spell being inscribed  In addition a Sleight of Hand skill check with a DC equal to 10 + the level of spell being tattooed must be passed. Failure causes the tattoo to magically evaporate from the skin as if it was never there.
• An artist can inscribe a maximum number of tattoos on a person equal to 1/2 their character level (a 12th level tattooist can inscribe 6 tattoos on a person).
• Casting the spell from the tattoo requires an action and a verbal command only.