Luis Scott-Vargas, commonly known as LSV, is a professional Magic: the Gathering player from Oakland, California, USA, currently living in Denver, Colorado. His accomplishments include fifteen Grand Prix Top 8s and ten Pro Tour Top 8s. In 2013 he was inducted into the Magic: The Gathering Hall of Fame. As well as being a prominent player of the game, LSV is also known for writing about the game. He was a writer for StarCityGames.com before becoming the editor and vice president for ChannelFireball.com, a Magic: The Gathering shop and strategy website. LSV still writes for ChannelFireball but ended his tenure as editor in 2012 to work as a game designer at Dire Wolf Digital, specifically on Eternal, and in 2021 LSV joined Good Luck Games to work on Storybook Brawl.

Magic: The Gathering is a tabletop and digital collectible card game created by Richard Garfield. Released in 1993 by Wizards of the Coast, Magic was the first trading card game and had approximately fifty million players as of February 2023. Over twenty billion Magic cards were produced in the period from 2008 to 2016, during which time it grew in popularity. As of the 2022 fiscal year, Magic generates over $1 billion in revenue annually.