Too bad Duck, you make up all this crap about Faust and all of that. And I've already said it before: The Supremes are something of an anti-Equestrian. Supremes have a much higher resistance to Equestrian magic, and if they concentrate quite a bit and if there are many, then they would be able to purge the summoning of magic. That doesn't mean that magic machines won't work, they still will. It just means that they'll begin to lose power. A magic shield would begin to fail within minutes, and the thrusters and the like will also begin to run out, until the Supremes let magic back into their whatever that lets them collect and utilize it.

Everyone else has very limited forms of anti-magic countermeasures, if at all. You have an energy you can grab from anywhere. An unlimited, sustainable, efficient, always-present, renewable resource. Now if you want to tell me that I can't BLOCK it whenever several powerful, half-god beings are focusing to do so, then I suggest you severely decrease the power of it. It's not fair for everyone else, since everyone else has to construct solar panels, oil refineries, mining setups, and you can just have this talking rainbow unicorn grab energy from a cloud that hangs everywhere, and no one else can.

It's unfair. And the Supremes aren't directly involved anyways, so if you don't try to curbstomp anyone, or something similar, you shouldn't have a problem.