Mark Justice (born c. 1970) is a former Magic: The Gathering pro player.
Justice is also an author of the basic and advanced Magic: The Gathering strategy guides.
At Pro Tour Atlanta in 1998, Justice was disqualified from competition for cheating in the limited draft portion of the event.
The extra card ("Muscle Sliver") was from a different print run and had visibly different color shading from the other three copies he had drafted, and Justice was immediately found out.
This was the most prominent of several incidents of cheating and foul play that have thus far prevented Justice from being admitted to Magic's "Hall of Fame."