Fun with Arcane Mark!

From publisher blurb: Do you like tattoos? How about magical ones? How about magical tattoos that can be invisible or incomprehensible? If you do, then you’re in luck because the arcane mark is exactly that! Presented within Sidebar: Fun with Arcane Mark! are off the- wall ideas for this fun little spell and even a new feat guaranteed to enhance this non-assuming magic into a staple of any spellcaster’s book!