Dual Nature | Magic: The Gathering
Formats Dual Nature is Legal in
Official Oracle Text for Dual Nature
Whenever a nontoken creature leaves the battlefield, exile all tokens with the same name as that creature.
When Dual Nature leaves the battlefield, exile all tokens put onto the battlefield with Dual Nature.
Official Rulings for Dual Nature
10/4/2004 : If the original creature has any "enters the battlefield" abilities, the copy will also have those.
10/1/2009 : The token is not considered to have been kicked, even if the creature it's a copy of was kicked.
7/1/2013 : If a legendary creature enters the battlefield, the token is put onto the battlefield and then the "legend rule" forces its controller to put either the original or the token into its owner's graveyard before any player can take any actions.