To help pay for his undergraduate education, Elias Garcia-Pelegrin had an unusual summer job: cruise ship magician. “I was that guy who comes out at dinnertime and does random magic for you,” he says.

To help pay for his undergraduate education, Elias Garcia-Pelegrin had an unusual summer job: cruise ship magician. “I was that guy who comes out at dinnertime and does random magic for you,” he says.

The concept sounds almost too easy: A magician puts on a cannabis-themed magic show in which he performs tricks with a lighter, blows smoke in creative ways and makes a jar of weed disappear into thin ...