Local electronic dance music collective Techno Snobs took over Lumberjaxes in Tempe on Friday, November 29, for Obsidian 2019, and transformed the place into a darkened den of techno bliss. DJs like Headless Horseman, Assailants, and Dasha Rush spun heavy mixes while colored spotlights pierced the fog-filled room, and a throng of EDM fans danced and raged all night.