Historical Rules · 17 June 2011
Rule 700.6
Official source text from the 17 June 2011 Rules release
The term dies means "is put into a graveyard from the battlefield." It is used only when referring to creatures. (This term will be introduced in the Magic 2012 core set. Some older cards will receive updated wordings in the mid-July 2011 Oracle update. These updates will not affect how those cards function.)