King Gizzard and the Lizard Wizard sensed the Prague crowd wanted it hot and heavy and they delivered a banger of a show, easing up with some funk, blues and soul late in the two-hour set. The three levels of the Lucerna Velky Sal, a theater used for high school prom and ballroom dancing competitions, were piping hot; a blast of hot air billowed out of the venue’s front door for at least 45 minutes after the show.