Luis Scott-Vargas (born February 17, 1983), commonly known as LSV, is a professional Magic: the Gathering player from Oakland, California, USA, currently living in Denver, Colorado.

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.

He won Grand Prix Kansas City and advanced to the Top 8 of US Nationals, Pro Tour Nagoya and the 2011 World Championship.

He lost 2-3 to Bland, leading to Owen Turtenwald winning the Player of the Year title and LSV taking second place.

[14] Also in 2011, LSV was invited to take part in the third annual Magic Online Community Cup.

LSV won a 2012 World Magic Cup Qualifier to earn a place on the United States national team, alongside national champion Brian Kibler, for the first World Magic Cup event.

[22] LSV was inducted into the Hall of Fame at Pro Tour Theros alongside Ben Stark and William Jensen.

Eventually LSV managed another Top 8 at Pro Tour Oath of the Gatewatch in 2016 alongside two of his ChannelFireball teammates.

In what was LSV's sixth Pro Tour Top 8 he lost to eventual champion Jiachen Tao in the semi-finals, ultimately finishing in third place.

LSV followed this up with a top 8 at the next Pro Tour for Shadows Over Innistrad, piloting a BG Aristocrats deck for the standard portion of the event.

However, Wizards of the Coast has allowed him to defer the platinum status he had earned, and he has stated he intends to play on the Pro Tour again at some point in the future.

[24] LSV is known to favor control decks in Limited, and often comments on his love for drawn out games involving mana-intensive cards.

[26] The team is named after two Magic: the Gathering cards – Channel and Fireball, one of the most famous two-card combos from the early days of the game.

They named her Naya Scott Vargas Sarcedo,[30] after the Magic nickname for the color combination of red, green, and white.