I love Urza Tron. This one has been in my head for awhile but finally found a way to do it justice. The cavity is large. This will fit double sleeve 100 card deck easily.

This requires supports and magnets. I used 6 8mmx2mm magnets and 2 pegs to keep it together. You willl need glue to secure the magnets and the pegs. I used super glue. You can see in the one picture that 6 magnets is strong enough to hold it together when the cards are held upside down.

I recommend using these magnets. https://us.store.bambulab.com/products/round-magnet?id=42424856477832&modelId=681373

I want to do the power plant but which old art should I try and make for that?