i think it is a palkia,dialga,rayquaza,giratina,darkrai and lugia
after you beat the elete four go in tall grass and you will find level 50 Pokemon there.
lapras, dragonite, nidoking,zapdos,and mew
get your card to black complete pokedex win master rank in contest get platinum flag beat elete four then your done
after beating all the elete four
get the national pokedex peace out
beat the elete four, but theres still tuns you can do after that.
go get mewtwo from ceruleon cave and get all the Pokemon you have missed
i recamend using a level 69 typhlosion
Beat the elete four 19 times.
There are four. Timid, Hasty, Jolly and Naive.
It is right past sunyshore city. While you are on victory road you get closer to the sinnoh league with the elete four.
you cant but you can battle the elete four as meny tymes you want 1st beat the elete 4 then watch the ending till it says the end then go to the elete 4 and tada you can fight em 10000000000 times