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Appendix A — Judge Quick Reference

A quick lookup table for the most common situations a judge will encounter. Always consult the full infraction text in the relevant section for procedure details and deviation guidance.

SituationInfractionCompetitiveProfessional
A player performs an illegal gameplay actionGame Rules ViolationWarningWarning
A player resolves an effect incorrectlyGame Rules ViolationWarningWarning
A player fails to maintain correct game stateFailure to Maintain Game StateWarningWarning
A player ignores opponent’s illegal actionFailure to Maintain Game StateWarningWarning
A player forgets a required triggerMissed TriggerCautionCaution
A player sees cards they should not seeLooking at Extra CardsWarning → AP1 (if severe)Warning → AP1 (if severe)
Hidden/private cards become mixedHidden Card ErrorWarningWarning
Deck does not match decklistCard Pool Contents ErrorAP1 → Match Loss (if major)AP1 → Disqualification (if major)
Decklist is illegal or incorrectDecklist ErrorAP1 → Match Loss (if major)AP1 → Match Loss (if major)
Player presents deck incorrectlyPresenting Cards ErrorWarning (tokens may be Caution)Warning → AP1
Player shuffles improperlyShuffling ErrorAP1 → Game Loss (if advantage)AP1 → Game Loss (if advantage)
Deck not sufficiently randomizedInsufficient ShufflingWarningWarning
Cards are distinguishableMarked CardsWarning → Match Loss (if advantage)Warning → Match Loss (if advantage)
Draft rules violated (minor)Draft Procedure Violation — MinorWarningWarning
Draft rules violated (major)Draft Procedure Violation — MajorMatch LossMatch Loss
Player is late to matchTardinessAP1 (<1 min = Warning, >10 min = Match Loss)AP1 (<1 min = Warning, >10 min = Match Loss)
Player gives incorrect public infoCommunicating Incorrect Game InformationWarning → Game Loss (if advantage)Warning → Game Loss (if advantage)
Player plays slowly (no intent)Slow PlayCaution → Warning → Game LossCaution → Warning → Game Loss
Player receives outside helpOutside AssistanceGame Loss (downgrade possible)Game Loss
Disruptive or disrespectful behaviorUnsporting Conduct — MinorWarningWarning
Severe disruption or harassmentUnsporting Conduct — MajorGame LossGame Loss
Extreme behavior or escalationUnsporting Conduct — SevereDisqualificationDisqualification
Player pressures opponent to concedeImproper ConcessionGame LossGame Loss
Player exploits rules to trap opponentRules SharkingWarningGame Loss
Player delays to run out clockStallingMatch LossDisqualification
Betting on tournament outcomesWageringMatch LossDisqualification
Player offers incentive for resultBriberyDisqualificationDisqualification
Player intentionally breaks rules for advantageCheatingDisqualificationDisqualification