Kadabra, machoke, graveler, gastly, poliwhirl w/king rock, slowpoke w/king rock, onix w/ metal coat, scyther w/ metal coat, kingdra w/dragon scale, porygon w/upgrade, clampearl e/deepseatooth or deepseascale, rhydon w/ ptotector, electabuzz w/electirizer, magmar w/magmarizer, porygon2 w/ dubious disc, and dusclops w/reaper cloth (w/ means holding)
Haunter evolves through a trade.
Abra evolves at level 16 to Kadabra and then it evolves through trade evolution to Alakazam
Machoke evolves into Machamp only through trade my friend.
Haunter evolves through trade, not with a stone.
Boldore evolves when you trade it.
gravel evolves to golem through trade
It evolves into Escavalier through trade with Shelmet
Haunter evolves through a trade.
Abra evolves at level 16 to Kadabra and then it evolves through trade evolution to Alakazam
It only evolves through trade.
Machoke evolves into Machamp only through trade my friend.
The Up-Grade evolves Porygon into Porygon2 through link trade. Then Dubious Disk evolves Porygon2 into Porygon-Z.
In Pokemon black and white, it evolves feebas into milotic once you trade
In the Pokemon center and it evolves into ALAKAZAM!
you just trade it and it evolves during the trade. then ask your friend to trade it back
trade it and it evolves
Rhydon via trade.