you should do what ever you think is right try a quick ball
no- at least not to start the battle you should try to catch it with something else you should use master ball as a last resort
capture legendary Pokemon like rayquaza.
Master Ball which you can get at the (Team Magma or Team Aqua) hideout
try master ball it is the best olviously
It is best to get rayquaza. Use mean look on latias and latios, it'll stop them fleaing.
well, I would save the master ball for latias/latios. so, use the timer ball. or just palin poke balls, like I did.
You should save it for later to catch Latios.
you should do what ever you think is right try a quick ball
After defeating him in the galactic HQ after the seventh gym, Cyrus will give you a master ball. Do not use your master ball on dialga! Instead, use it on Cresselia or another harder Pokemon to catch.
Hmmm.....that's tough I suggest Latios or Rayquaza but it's honestly up to you
save it for Latias, since Latias will always run away while Rayquaza stays in battle.
It can be if you want it to or you can use it on rayquaza, the easiest way to catch latios or latias without using the masterball is by having a Pokemon that has the abilites: Arena Trap, Shadow Tag and having the Pokemon be sent out first then weaken latios/latias then throw many ultra balls.
Master Ball.
Yes
master ball
yes unless you have a master ball latios is hard to catch