Are players allowed to use proxies in any situation during a tournament?

Players are generally not permitted to use proxies during a tournament unless they have been officially issued by the Head Judge. This allows for a clear and fair structure within competitive play, ensuring that all participants are using legal and recognized cards. Proxies can create inconsistencies in gameplay and may lead to misunderstandings or disputes regarding card effects and rulings.

The allowance of proxies specifically by the Head Judge ensures that any exceptions to the rule are controlled and properly managed, maintaining the integrity of the game and ensuring that players have a consistent experience. This option acknowledges the need for flexibility in unique situations while still upholding the standards of the tournament.

In contrast, the other options imply either unrestricted use of proxies or conditions that would not be appropriate or consistent with tournament rules. For example, the idea that they can be used freely contradicts tournament regulations, which aim to standardize card legality. Proxies for marked cards would also fail to address potential issues that could arise from misrepresentation or confusion regarding the actual game state. Lastly, stating that proxies are never allowed dismisses the possibility of legitimate use under the guidance of the Head Judge in specific circumstances.