Fantasy-creature gore may be a funny spectacle, but it’s not enough to hang a whole movie on. Photo: Murray Close/A24 The rich having been looking enormously appetizing lately, so you have to really fuck up for your movie about eating them to feel unsatisfying. But so it goes with Death of a Unicorn , an upcoming horror comedy that dipped by the SXSW Film Festival for a premiere ahead of its theatrical release on March 28. Its antagonists are the Leopolds, a trio whose extensive holdings come