I really like this and think it would be a sick tattoo on the inner wrist. The word valknut is a neologism: it is formed in modern times through combination of ON valr, ‘the dead’ or ‘the slain’ and knut, ‘knot’.
the valknut- vikings painted this on their shields to call the Valkyrie to take them to Valhalla if they were killed>>Maybe the Magicians in the order could have some sort symbol. Like the ichthus was a symbol.
This tattoo is a zen circle (or Ensō) symbolizes: enlightenment, strength, sometimes infinity and imperfection. Now I have found the meaning why I have it on: because I’m just as imperfect as this unfinished circle, and this is how it should be.