So if I have this right, your opponent must underdeck a card and it protects one of your neutral cards, is that right? This would definitely make soul drought a lot easier. One question I have, is there a reason that Pale Green is there as well? I know that 2 Babylonians are Pale Green/Crimson, but all other Babylonians that I can think of are Crimson, so I don't see a reason for the Pale Green to be there. Unless it's simply to restrict how many can be in a deck, which is a good idea. If you want to keep the Pale Green, maybe make it "If used by an Assyrian or Babylonian". That would give some use for the Pale Green part of the card. And would work perfectly with my favorite combo defense. I like the idea, and it's a cool-looking card.