Denver-based symphonic black metal quartet STORMKEEP is pleased to present their new video for “The Black Dragons Of Iswylm.” Now playing at Metal Injection, the song serves as the centerpiece single from their highly anticipated sophomore album, The Nocturnes Of Iswylm, out now via Vesperian GmbH/Metal Blade Records. A visual statement unlike anything STORMKEEP has done before, the video marks…