when you beat the game.
Yes! You can do that.
you can trade Pokemon from white to black and from black to white
Yes, you can do it. (P.S. I have done it before)
A trade is required from white or white 2 where it can be caught
Rufflet cannot be caught in Pokemon Black 2, you must trade from White 2 or White.
You cannot get it in black 2 or white 2 but you can trade it across
You cannot find Mewtwo in Pokémon Black, White, Black 2 and White 2 so you will have to trade for 1 or you will have to transfer it from a previous game.
You need to trade from white
can you TRADE for a pansear on POKEMON WHITE 2!
according to serebii.net, there is no victini event in black 2 or white 2,so you need to trade from black or white.
Trade from white and if you have white trade from black for tornadous
In Pokemon White you'd have to trade with someone who got it in Black/White 2