magical tattoos? like tattoos with special properties or they move around on skin or smth?

auideas:

• After turning 18, every kid is required to go to special tattoo parlor
  where the town’s resident mage gives them a tattoo. No one knows what
  the tattoo will be until it’s done, not even the mage. The tattoo forms
  itself into a symbol that will become very important in the person’s
  life. On Character A’s 18th birthday, their tattoo forms itself into a
  crown.
• Character A convinces their best friend, Character B, to go get a
  tattoo. Not wanting anything big, Character B gets a small flower on
  their back. The next morning, Character A gasps when they see Character
  B’s entire back covered in vines and leaves and flowers, and they only
  seem to be spreading further.
• Everyone gets one tattoo in their life, and that tattoo gives them a
  power of their choosing. Character A really wants the power to see
  through objects, so they get a pair of eyes. However, after a series of
  visions, they come to realize the power that manifested was actually
  seeing into the future.
• “I’m a mage and have been searching for an apprentice for years by
  pushing a little bit of magic into everyone tattoo I give, just to see
  if anyone reacts to it. None had, until I gave you yours. The second the
  needle touched your skin, ink started flowing into patterns everywhere.
  Please stop freaking out” AU
• When tattoos start appearing on one’s body overnight, it’s a sign that
  they’re meant to join the War of Magic. However, Character A’s parents
  are major pacifists and hate the war, so Character A begins their own
  struggle as they try to hide the growing tattoos their parents.
• “I’ve been told all my life that moving tattoos were normal – a sign of
  being healthy. But I don’t think that means the tattoos are supposed to
  come off of my skin and fly around? Cause that’s why I’ve been hiding
  out in my room all week” AU