Kadabara only evolves if you trade it to a friend by link cable or wirless adapters, it will not evolve by migrating it, it can evolve by wireless link up with a DS and using the GTS as well.
Trade it with a friend, then trade it back to yours.
Mewtwo hands down, possibly mew. If you are not this good however go north of celadon (nugget bridge) catch an Abra and train it to about level 20 so it evolves into Kadabara. To make it evolve again you need to find a nice friend (who's not a thief! Because some one stole my gengar!Trade it and trade it back, this is because Kadabara evolves in a trade!
16 to get Abra then trade kadabra for a kadabara and it will be a alakazam
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
They evolve at level 36
It will evolve at level 36.
They evolve on level 40
it evolve on level on 64
if you dont let it evolve at the required level of level 20. itll try to evolve at every level following.
To evolve a Sandshrew level it up to Level 22 and it will evolve into Sandslash.
Pikachu do not evolve by level. They evolve when a thunderstone is used on them.