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If you are already untapping your artifacts for effects, it can even be in a Constructed deck

In fact, I can already see the start of a potentially scalped card, and it comes in the form of a surprisingly cheap collection

You do not choose them when casting the spell

BRASS INFINISCOPE A four mana rock is a hard sell unless its Thran Dynamo or Nyx Lotus, so what does Brass Infiniscope offer

On top of greens already solid ramp, there are lots of cards like Marwyn, the Nurturer, Gyre Sage and Rishkar, Peema Renegade that work with this theme specifically to make dizzying amounts of mana

"Burger King Recalling Pokemon Containers" (PDF)