ANY TRICKS ON CATCHING LEGENDARIES INSTEAD OF USEING MASTERBALL ALL THE TIME

The best way of catching a legendary is kind of hard, but here is something that will make it incredibly likely that you will catch it. First, save the game before challenging the legendary. Then, basically, you need to catch a weak Pokemon that can learn the move "endeavor". I think the only Pokemon in this game that can learn it at a low enough level is Starly. It learns it at level 17. Make sure it never evolves. Give it a "focus sash". It will keep it alive with 1 hp if it gets hit with a move at max hp that would normally take it out. Next, make sure you have a Pokemon that can make it fall asleep, preferably 2 Pokemon with a move like that, as well as 2 Pokemon that can paralyze it. The moves that cause these status effects CAN'T BE DAMAGING MOVES. Depending on the type of Pokemon, where it is located, and the weather, you will have to make sure you have the right ball. An ultra ball is a very basic ball, it simply increases the odds. But there are others that increase the odds more dramatically depending on the Pokemon, the location, and weather. If the Pokemon is in a cave, you should have a dusk ball. If it is water or bug type, have a net ball. If it is a fast Pokemon, use the fast ball. But make sure that you have some quick balls at your disposal. If all goes according to plan, the Pokemon should be at 1 hp and asleep or paralyzed by the end of turn 3. After turn 4, the quick ball will go down to 3x the catch rate of a Pokeball. Use the quick ball on turn 4. If it takes more than that amount of time to paralyze it or make it fall asleep, restart from where you were before, right before challenging the legendary. Make sure you use as many effective bonus balls as you can before going to the ultra ball. It has only a 2x catch rate. Here is a link that can help you determine the odds of catching a Pokemon with that strategy with varying different balls: http://www.serebii.net/itemdex/ultraball.shtml I really hope this helps! It usually works, like 100% of the time.

Please refrain from using all caps, even if you're asking a question, it is still really spammy. This seems to have been answered, so I close it, because I don't like all caps.