Okay so I'm a little confused about this card. For example; if I want to deal three damage to a creature with flying and a creature without flying, am I only paying a green, a red and there more mana to fulfill the X? Or would I have to pay another three to do three damage to both?
{Clan Defiance}
You only pay the cost once. Then you get to do each of the modes on the card once, provided there's a valid target and you want to do so.
So it's the first thing you said.
You would not have to pay extra. Each instance of X is dependent on what you paid for the cost of the card, and do not need to be paid seperately.
Thanks a lot!