Can we use the orbs we have for any Dragon and not just for the Dragons that you want? For example, I have A LOT of the purple orb and I would like to use it for a Dragon I don't have, but I can't because it can only be used for a certain Dragon.
Or just like the potions, I can't use them for a Dragon I don't have.
I can't move forward in a fight because I'm missing a Dragon and I can't purchase Gems on a regular basis. I would like to use my gold instead of Gems.