10 things any player participating to a competitive tournament must know :

This is a summary of some common tournament infractions and penalties. This document does not contain the full definitions and philosophies of the various penalties. If you have a question about penalties and procedures, please talk to a judge. The full documents are available at http://www.wizards.com/default.asp?x=dci/doccenter/home.

The penalties below apply at Competitive Rules Enforcement Level (used at events such as PTQs and the first day of a GP). Tournaments at lower and higher levels may have different penalties.
Most penalties will be upgraded for repeated offenses. Many of these penalties are given for unintentional violations – intentional rules violations are Cheating, penalized with Disqualification. A verbal Caution from a tournament official is a penalty that can be upgraded. You do not need to be playing in order to receive a penalty.

If in doubt, ask a judge.

  1. Deck/Decklist problems – Game Loss. Examples: too few cards registered, illegal cards in deck, failing to desideboard, having a card that belongs to a previous opponent in your deck.

  2. Most unintentional game play errors – Warning. Examples: missing a triggered ability, underpaying mana, leaving a dead creature in play.

  3. Not noticing your opponent make an illegal play – Warning. Both players are responsible for the game state. This penalty will not be upgraded for repeat offenses.

  4. Not randomizing your deck sufficiently – Warning. Make sure you do not see the faces of the cards while you shuffle, and remember that a pile shuffle alone does not randomize the deck.

  5. Marked cards or sleeves – Warning or Game Loss depending on the potential advantage gained from the markings.

  6. Using notes or giving/requesting advice – Match Loss. Do not refer to notes made before the current match during games. Do not make comments on games that are in progress. If you see a rules violation, tell a judge.

  7. Randomly determining the winner of a match – Disqualification. Rolling a die compromises the integrity of the event.

  8. Offering or accepting anything as a bribe to another player or official – Disqualification. This includes prize splits in exchange for a concession or intentional draw.

  9. Unsporting, disrespectful or aggressive conduct – Warning to Disqualification, depending on the situation.

  10. Lying to a judge – Disqualification. Judges are here to help you. Please help us do that by telling the truth.