MCB is correct, the advantage of knowing if it is smart to choose a particular path of play is huge. It is not epic when choosing 3 cards, it becomes ridiculous when choosing 30 at the same time.

You can play a lot of cards at once right now if you record the card numbers as you purchase them and then manually put the card number into the url slot. You can set up each card, selecting your target and scoop to attack if necessary, in a different tab and just click them one after another during the last 2 minutes. It is a pain in the bum, but I know many of the long time Dom players do it. PDB and Arktor did it religiously.