In my SoulSilver, I used it on Mewtwo, I knew he was going to be hard to catch after I tried it on Fire Red. In Platinum, I used it on Giratina, he was SOOO hard. In Pearl, I used it on Mesprit.
My friend just told me he threw his Master Ball at a Ponyta. Then, he restarted and used it on a Growlithe. Both in Crystal.
But the funniest thing, In Ruby, I threw my Master Ball at Groudon and he broke out. ;_; IT WAS A MASTER BALL!!!! I didn't end up catching him. I was young and didn't think about saving before a Legendary battle.
My friend just told me he threw his Master Ball at a Ponyta. Then, he restarted and used it on a Growlithe. Both in Crystal.
But the funniest thing, In Ruby, I threw my Master Ball at Groudon and he broke out. ;_; IT WAS A MASTER BALL!!!! I didn't end up catching him. I was young and didn't think about saving before a Legendary battle.