Terrifyingly, it's just a few weeks until Comic-Con International annexes most of downtown San Diego and with it, our souls. But with a new comics convention comes a new offering of exclusive stuff from BOOM! Studios. The publisher of the Adventure Time line of comics as well Lumberjanes and Bee and Puppycat and others is known among rarities collectors for its convention-only releases, and they'll be back at their booth with more at this year's San Diego Comic-Con. Check out the company's latest assortment of exclusives below, including the hardcover Mathematical Edition of Adventure Time: Marceline and the Scream Queens.