What is the recommended minimum percentage of decks to check at a PTQ?

The recommended minimum percentage of decks to check at a Pro Tour Qualifier (PTQ) is 10%. This standard is in place to ensure that a significant sample of decks is examined for rule compliance, promoting integrity within the tournament environment. Checking a minimum of 10% of the decks allows the tournament officials to identify any potential issues related to deck construction or illegal card choices that could affect the fairness of the competition.

In larger events like PTQs, where numerous competitors are involved, this percentage strikes a balance between thoroughness and practicality. It is enough to provide a reasonable assurance of compliance while not being excessively burdensome in terms of the time and resources required for checking. This systematic approach helps maintain the competitive integrity of Magic: The Gathering events.