Besides the Sword and Sorcery books, is there other material that covers tattoo magic?
And while I'm asking. How many of you out there use tattoo magic in your games?
other that R&R which you mentioned, there's some in the new dragon, and also in Magic OF Faerun, or possibly the FRCS. They're all quite different methods of doing kinda similar things.
I have been thinking about toying with magical tatoos but haven't yet. I have used psionic ones a few times. Several books talk it's use. I believe the ones above are your best bet.
There's also a tattooed mage in the Book of Eldritch Might, called the Graven One. It seems pretty interesting, but giving up 5 levels of spellcasting is harsh, so I've never really examined it in depth.