I've been trying to search it everywhere and it's really bugging me. But say in Pokemon White 2, you have Kyurem and Reshiram after the Elite 4, and link them together to get White Kyurem, COULD you trade a Zekrom and ANOTHER Kyurem over from Pokemon White to Pokemon White 2 and STILL use the DNA Link Pin to create Black Kyurem so you could have BOTH in you're party?
No, you can't my source is In-game experience, I tried and it can only be used with a kyurem you caught in-game.
i have the same question but dang I know that you can use other kyurems other than what you captured yourself cause I fused one I got in a gts trade the only problem is that you cant fuse 2 of them at the same time so the only way you could not get both forms is if you don't have another copy of black or white 1or 2 and access to a spare ds system to trade your stuff over and redo story in black or white 2 whichever you have