2. If I move one of my guys, and my opponent responds with an order card... Can I respond with a standard action card? Essentially I want to know if I can use a standard card in response to an immediate card, with the understanding that I am on my turn and during the activation of said creature.
You can't respond to an immediate with a standard. Why they would play an immediate in response to you *moving* is beyond me. Immediates are primarily reactions to negative events on a creature, and playing an immediate taps that creature.