What does Hidden Information Violation refer to?

Hidden Information Violation pertains specifically to the illegal revelation or seeking of information that players are not supposed to have access to, which can create an unfair advantage during gameplay. In Magic: The Gathering, certain information is kept hidden from players to maintain the integrity of the game, such as the contents of a player’s hand, their library, or hidden roles in formats that have them. When a player seeks out this hidden information or reveals it inappropriately—intentionally or unintentionally—they violate the rules of the game that are designed to ensure fair competition.

This violation not only impacts the game's competitive balance but also undermines the trust and sportsmanship that are essential to playing Magic. Understanding and respecting the boundaries set by the game’s rules concerning hidden information helps maintain a fair and enjoyable environment for all players involved.

The other options, while related to general gameplay violations, do not specifically define what a Hidden Information Violation entails. Such violations keep the integrity of the game intact, which is crucial for a fair playing experience.