You can't, you only get one, though Sapphire/Ruby/Emerald has a lottery where you can get one.
well you can but you need to use the action replay to or else it is impossilble cuz there is a code to get 900 master balls (remember you need a action replay)
On a certain Pokemon that you want to catch and it's hard to catch it with just a Poke Ball, a Great Ball, or an Ultra Ball. I don't know where else you can get Master Balls besides the Silph Co. I usually use the Masterball on legendery Pokemon.
First of all, You need to update your action replay or it will freeze when you click play. But i recommend Wild Pokemon modifier, it gives your infinite master balls, and you can find Zekrom and reshiram and whoever else as a wild Pokemon if you want. Code: 94000130 FCFF0000 02233FCC 02890001 02233FD0 00640002 D2000000 00000000 94000130 FFFB0000 DA000000 02233FCE D3000000 00000000 D7000000 02250030 D3000000 00000000 DA000000 02233FD2 D3000000 00000000 D7000000 02250032 D3000000 00000000 D9000000 02250030 D3000000 00000000 C0000000 0000002F D6000000 02250030 D2000000 00000000 Press L+R and you will have 649 Master Balls and 100 Ultra Balls. Toss any number to change which Pokemon will appear (# of Master Balls = Pokemon #, # of Ultra Balls = Pokemon level). Press Select before heading into grass to activate.
You gat a master ball after you defeat dreyden in black , or iris in white, professor juniper gives you one , then if you go to the Pokemon center in castelia city , you must talk to the man next to the union room , ( with the black hair and sunglasses) and after you have traded fifty Pokemon he will give you a master ball, he also gives you a choice scarf , a zoom lens , a wide lens , an everstone , and I can't remember what else off the top of my head , but I think those are the two ways, or you can just trade Pokemon who are holding master balls, I hop that helped
The other way of getting a legit Master Ball in Pokemon Pearl/Diamond/Platinum is through the Jubilife City Lottery. Winning the grand prize gets you ten Master Balls, however the chances of winning are tiny. The easiest way would be to use Pal Park and import Pokemon holding Master Balls from Pokemon Ruby/Sapphire/Emerald if you have a DS. If you have a DSi or don't have the GBA Pokemon games, then borrow a DS and/or game from someone else. Another (less legit) way is to exploit the GTS glitch in Pearl/Diamond and clone a Pokemon holding the Master Ball.
first thing its Giratina u can first lower its hp, make it asleep or anything else then throw lots of ultra balls OR THROW A MASTER BALL in the beginning =P
first u need a gameshark then put in the master ball cheat. after that go to the pokemarket and buy. it should say poke ball 0$ but it is really a master ball. others are paralyz heal 100$ and something else. this answer is by Dakota rodriguez/ A.K.A cross. my email address is dakotarodriguez98@yahoo.com
you cant do anything else,except if you have action replay.
you can get one from trading from someone else a pokemon that is HOLDING a master ball, or you can use cheats
It's exactly the same as catching a regular Pokemon. Try to weaken it enough for its HP bar to turn red. The move False Swipe can get its HP down to 1. Also try giving it a status effect like paralyzing it or putting it to sleep. Also, use high-level balls like Ultra Balls to get an even better chance. If all else fails, you can just use a Master Ball if you have one.
No. There may be more Pokemon that are better and/or more legendary later in the game. I suggest having a Pokemon about the same level as them and teaching it mean look and a sleeping and/or paralyzingly move. You will have to use mean look right away or else it will flee. Then lower it's hp and paralyze and/or put it to sleep then start throwing poke balls ( I suggest going at night and bringing 20 ultra balls and 20 dusk balls) until you finally catch it. I hope I helped :)
The only way to obtain more than one master ball in any Pokemon game is to trade with someone else. The Pokemon you get has to be holding a master ball. This is very hard to do since pretty much no one is going to give you a master ball...