Historical Rules · 1 October 2010
Rule 800.3
Official source text from the 1 October 2010 Rules release
Many multiplayer Magic tournaments have additional rules not included here, including rules for deck construction. See the most current Magic: The Gathering Tournament Rules for more information. They can be found at http://www.wizards.com/Magic/TCG/Events.aspx?x=dci/doccenter/home.