Originally Posted by Fat Sprocket
It has a catch rate of 3. Which is the same catch rate as most legendaries (IE: Mewtwo, Giratina, Latios, and so on). Which means it will be obnoxious to try to catch, no matter what you do to it.
Catching it with a standard Poke Ball is just plain luck, but it can be done.
The best Poke Ball you can use on Victini, besides a Master Ball, is a Timer Ball after 40 turns, followed by a Dusk Ball.
Really, a catch rate of 3? I thought it was 30 (Like the other pixies). I must just be lucky.
IIRC, when you first get to Victini, you have access to quick ball/net ball/poke ball/great. Not really a plethora of choices to use. Catch it after Burgh, and it's massively underleveled =/