Victini is obtainable through the DNS Exploit in Black and White, which uses fan-hosted servers to access old Mystery Gifts. For help with setting up the exploit, reference our detailed guide. A Victini obtained through this method is legitimate and will pass hack checks. This event is not available in Black 2 and White 2.
Note the exploit doesn't give you Victini directly; instead, it will give you the Liberty Pass so you can travel to Liberty Island and capture the Victini housed within.
If you don't have BW, you will have to trade for Victini or wait for another event to come around.
