UMM..... No way! The only way you can get other Pokemon on your ds is by migrating, or trading with someone else who has a Pokemon diamond, pearl,platinum,heartgold, or soulsilver versions.
trade them from another game
yes, any Pokemon game you can trade off of.
no yo can't find it you have to trade it off another Pokemon game.
get all the Pokemon on diamondcatch them or trade off another Pokemon game
trade them off GBA games if you have it on the GBA game.
if you have a game link cable then you trade your common Pokemon like a rattata or something like that and the person you are trading with uses a legendary Pokemon and then right before the trade is over they turn off there game boy and your game boy will remember the trade but there game boy won't caution may delete save data.
No you can't trade with black to diamond but you can trade from diamond to black using the poketransfer lab. (you will have to have beaten the game before you can use the poketransfer lab). Hope I helped this is luke127 signing off.
you can only do it unless you have 2 ds'
you could save before getting it, get the master ball, have a Pokemon hold it, trade that Pokemon, turn game off then back on, get another master ball, and trade Pokemon back.
cant get him so ether trade from the game that has him or get a game shark. thank you for reading. BLUEBERRY SIGHING OFF.
get chicorita at the start of the game then at level 16 it evolves into bayleef and at level 32 it evolves into meganium if you want all 3 starter Pokemon get 1,trade it and turn it off get another Pokemon trade turn it off get the last one and trade back the other 2 Pokemon hope i helped
save before you get the master ball, and when you do get it, trade a Pokemon over to another game, while the Pokemon holds the master ball (i suggest weak ones). then shut the game off, turn it back off and you will repeat the process. then, after you not only double it, but also triple and 4x the master balls, trade the Pokemon back to your game and you will have a lot of master balls.