How do you evolve Shelmet and Karrablast? Since you can only trade 1 Pokemon at a time, how do you trade Karrablast with Shelmet? Do you trade Karrablast for Shelmet?
Yes, you trade Karrablast for Shelmet in order to evolve the two.
You evolve Karrablast by trading Shelmet with Karrablast.They both evolve at the same time after the trade.The same with Shelmet, you have to trade Karrablast. (Hope This Helps!) :)