FX has released the first trailer for the third (and last) season of Legion, the network's X-Men series created by Noah Hawley that's made liars of us all as we tell our friends we totally understand what's going on. If this trailer is anything to go on, the trip down the rabbit hole is only going to get more far out, man as the show heads into its final episodes. Season 2 ended on a mighty divisive note, as the show's telepathic protagonist David Haller (Dan Stevens) appeared to make the final moves into becoming …