Using a master ball
master ball. but save it if you want it to use it on entei or raioku which run in the wild
no
Train a Golbat/Crobat. Or catch Entei with the Master Ball and randomly run into Raiku for the first time (Full HP) and catch with an Ultra Ball.
Of course, a Master Ball catches any Pokemon without fail, Legendary or not.
to catch suicune,mewtwo,raikou and entei
Using a master ball
you ensure that you catch the entei, but it will be harder to catch the ho-oh using ultra or other balls
get a Pokemon with the ability sound proof or a Pokemon with arena trap so he cant run
master ball. but save it if you want it to use it on entei or raioku which run in the wild
no
I'm not quite sure what your talking about, but I would have to say that you would not have to catch it in a Master Ball.
You can only run into Entei if you starter was a Bulbasaur and you beat the elite four. There is no specific spot where you can find him at but once you run into him use your master ball and catch him.
weaken lugia down till it is almost dead than use a poke ball you will not catch it but then use an ultra ball and then you have lugia. PS. use the master ball on entei
Yes
you need to have two master balls.
save your master ball or get a tag from wabafet and give it to a Pokemon with strong light and has a par move or sleep move and get get him to red life and get lots of ultra balls ^u can try that but what i did was i would do is on fire red get a master ball from saffron city at the big building then make a Pokemon hold the master ball then trade the Pokemon into leagreen then when ever entei comes CATCH HIM WITH A MASTAAAAHH BAAAALLL!!!!