how does magmar evlove

[Master Ken]

....

 

[Shiron]

You have to give it the Magmarizer item, and trade it when it's holding it:
http://bulbapedia.bulbagarden.net/wiki/Magmar_(Pokemon)

 

[PAK215]

This is a question that is answered by the wiki. It evolves by being traded while holding a magmarizer. Next time you have a question not answered by the wiki, use the simple questions thread.

 

[Tina]

Please use the simple questions thread for this. Thanks.