I need help catching it. No matter what I do, or what ball I throw. (I used my master ball on Giratina) No matter how much it's weakened it won't stay in the ball even when it's paralyzed and has like 1 HP left.
It has an insanely low Catch Rate, to make it easier, just do this,
A. Paralyze it
B. Get a pokemon with False Swipe, so it can be a literally 1 HP.
C. I suggest using Dusk Balls. ( Try this at night )
i suggest buying about 70 ultra balls. its all probability so it has a .12% or something like that with an ultra ball so keep trying.