While the Legends are no strangers to groovy time hijinks, magic is something new for them, and they recruited Constantine to help get rid of the unicorn.
His heroics didn’t mean he got a happy ending, however, and his cliffhanger means big things for Season 4.
Legends of Tomorrow returned to the airwaves with a premiere that pitted the Legends against a murderous unicorn circa 1969, and the time travelers had to act quickly lest all the hippies at Woodstock be gored to death by the magical creature.