Hello,
Was playing a friend in some joust games when this issue came up.
He would have the bigger dragons out like Drogon and Viscerion etc, then would play black hatchling or its like card as a attachment to drogon. Then next phase he would valar morghulis and remove the black hatchling duplicate from drogon and keep drogon in play.
Is that possible to do ? I thought you would have to discard dorgon and then the duplicate of black hatchling would now be in play? Not sure though. One more thing on this, duplicates stay in play after Valar Morghulis right ? Or does Valar wipe the original plus the duplicate ?
Also with the hatchling cards, you can not play them as duplicate from your hand directly to the dragons right? you have to bring them out of shadows before you can do this ?