What should players do if they are uncertain about a card interaction?

When players are uncertain about a card interaction, the best course of action is to call a judge for clarification. Judges are trained to interpret the rules and can provide accurate information about interactions between cards. This ensures that the game proceeds smoothly and according to the established rules, preventing potential mistakes or misunderstandings during play.

Calling a judge not only helps clarify the question at hand but also maintains the integrity of the tournament environment. Relying on the judge's expertise guarantees that decisions made regarding the gameplay are based on official game rules rather than personal interpretations, which can vary from player to player.

In contrast, other choices such as guessing, waiting until the end of the match, or consulting with other players can lead to incorrect gameplay. Guessing an interaction may result in an illegal move, while waiting until the match is over can cause unnecessary complications and might affect the outcome of the game. Consulting other players is also not ideal, as they might not hold accurate information regarding the interaction, leading to further confusion.