RE: The B/W Questions and Answers Thread
It works in 5th Gen. I was breeding a Deino(EN) with a Ditto(JP) and the stone was working.
squirtli said:When two Pokemon breed, if one parent is holding the Everstone, there is a 50% chance that the Pokemon you hatch will have the same nature as the parent that was holding the Everstone. It only works if the two Pokemon are from the same country, though.
It works in 5th Gen. I was breeding a Deino(EN) with a Ditto(JP) and the stone was working.