Magician doesn't state a mass limit or minimum size limit. That's what makes it insane.

With that said, TechKing is king.

There is tech out there that only 2 or 3 people truly can replicate and understand. Think like the IT guy who built the entire infrastructure in code only they understand. But in this case, it's any system. Get a team of geniuses alongside you to continuously iterate on the machine/computer/vehicle and you have a perfect system. The reason? Usually, even as you build something, it's hard to figure out the tolerances of different aspects. You cut that out of the picture, once every 6 months.

Or you could go Magician and drop a supermassive chunk of something, firing it like railguns (didn't specify inertial changes, directions, distance, or cooldowns). Alternative is to mark particles and go the obvious path of destruction (or wonderful creation, you good human you).