GreenWater10
Member
Tornadus. I don't have the time to find roaming pokemon.
I used it on my Reshiram!!! ^_^
Kyurem.
In retrospect, I wish I had used it on Thundurus because I spent around an hour chasing him all over Unova, slowly whittling away his HP and trying to paralyze and put him to sleep and then spamming Ultra Balls until I eventually caught him.
A masterball would've been much easier.