It works like tradeing Pokemon works in other games - It will evolve certain Pokemon such as Kadabra into Alakazam or Graveler into Golum.
The item "link cable", found wherever an HM normally is. See the link below.
you need the item link cable
You get the item link cable from one of the dungeons, and then go to the luminous cave.
The item needed for Kadabra to evolve into Alakazam is the Link Cable. The Link Cable is found in Solar Cave on The 10th floor and you need a key to get it!!! Hope this helped!!
A link cable evolves Pokemon that evolve with trades in the main series. Since there are no humans, the link cable is substituted. to get a link cable, go to any location that has a locked door. Get the item there, and leave. Then, the next day, go back to the same spot with another key, and instead of the item, there will be a link cable. this is because the game won't allow you to have more than one of an item, unless you have a wonder mail. for the evolutions, here is what you do. you go to luminous spring with a Pokemon like Haunter, machoke, or kadabra. you sacrifice the link cable, and that is how you use the link cable!
Yes, you can evolve Porygon in Pokémon Mysery Dungeon: Red Rescue Team but only into Porygon2, Porygon2 cannot evolve into Porygon-Z. You wil need to take your Porygon to Luminous Cave and it wil evolve as long as you have the Upgrade item and the Link Cable item.
a link cable .
In Pokémon Mysery Dungeon: Red Rescue Team, you will first need to have only Haunter in your rescue party in order for it to evolve and then you will need to head to Luminous Cave and as long as you have the Link Cable item in your bag then Haunter will evolve.
Go to the Pelipper Post Office!
In Pokémon Mystery Dungeon: Blue Rescue Team, in order to evolve Poliwhirl in the game, you will need two items in order to evolve it into Politoed and those two items are the Link Cable which is for all trade evolutions and the other item it requires for its evolution to Politoed is the King's Rock evolution item.
A Link Cable
Find a link cable in a dungeon and go to where you evolve at and you will evolve.