DEOXYS and Mew are not Available for Emerald, Sapphire or Ruby. These Pokemon are not available for any game, though two events were available for Deoxys, though Mew may have an Event for SoulSilver and HeartGold soon.
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Mew is one of the many Pokemon that does not evolve
Mew is not available in Pokemon Sapphire through normal game play. You must use a GameShark with a hacking code to get Mew.
There is no possible way to get a Mew in Ruby or Sapphire. The only way to get one is from Nintendo events.
you can not
You just cant
There is no mew in sapphire.
inposibal
No
you have to trade with pro oak a mew
yes you can get mew in sapphire, but you have to get Nintendo events
No it doesn't exist.
you cant unless you got it from Pokemon emerald Sapphire or ruby or cheating