i already beat the game and captured the legendary birds so I dont know what to do know
Sorry, but all three are Pokemon you could only get for a certain amount of time.
Heatran: October 14th 2010 to January 11th 2011
Manaphy: October 4th 2010 to January 11th 2011
Deoxys: October 4th 2010 to January 11th 2011
Hope I helped! Source
