you need 4 of the same evolve cards to do it, so you need to see this 4 times
once you have your 4 cards upgrade them like before with other cards or transmetal
so now you have 4 soundwave cards
evolve two together
![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2040_tny_zps6458b139.png)
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![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2040_tny_zps6458b139.png)
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then upgrade the newly evolved card and then evolve that with the fist card
![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2041_tny_zps8b348bc5.png)
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![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2040_tny_zps6458b139.png)
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uprgade and repeat
![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2046_tny_zps10e5ab96.png)
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![](http://img.photobucket.com/albums/v158/Sharkysparky/TF%20Legends/IMG_2040_tny_zps6458b139.png)
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so basically
1 + 1 = Newcard 2
Newcard 2 + 1 = Newcard 3
New card 3 + 1 = newcard 4
i am not even sure if you get higher sats if you evolve two level 2 cards together that would take 8 cards to get the highest possible level 4 eve=olve card, and it is certainly hard enough to get one set unless you purchase chains to get the guarentee capture, i was lucky i had time off and just farmed the levels to get them.
i did manage to score a nightbeat at the end of the event, if you have the time its not as $ dependant to rank high
hope that helps a little