Rumors of Swamp Thing's demise seem to be at least slightly exaggerated. Despite reports that production has shut down in North Carolina, the DC Universe series' marketing is plugging right along, first releasing a teaser, and now a full-length trailer. And hesitations aside, it actually looks pretty darn cool. With James Wan's name attached as producer and IT writer Gary Dauberman leading the show the horror influences aren't exactly surprising. (Plus, you know, Swamp Thing is a giant green moss monster.) But this trailer dives deep into some unnerving places, with a sentient string of vines …