Many of us have suspected the whole Thorn/Last Word connection is tied in to the Dark Tower series for a while now. (Greatest book series ever) but Deej posted a new shirt of his on tweeter. Clearly Roland with the pistols in the field of roses in front of the Dark Tower with the eye in the back and the keyhole. (So much of that fits into our grimoire Thorn/LW stuff). Odds are, the series played some role in the writing of the grimoire. This just helps further that point. (And for sake of accuracy Deej, Roland never had both guns at that point, or had the ability to shoot with his right hand from the crabs) (And I'm totally jealous of it, by the way)