Granted, you get a creature token on top, but assuming an average top five reveal, thatll be a 2/2 or a 3/3, and Im not entirely sure thats worth the extra mana cost
For example, Blue can be used if you want to focus on countering spells (creatures, sorcery, etc) and draw cards quickly
As a big fan of old Phyrexia, I also have to give kudos to this card for truly feeling like a threatening massive Phyrexian horror, unlike things like Dragon Engine
If you want to cast one of the milled cards, you cast it as part of the resolution of Summons of Saruman
Even within the rules of fan-art I listed above: people buying it know theyre buying a proxy, a replicated card (at least, assuming its not someone trying to hock a proxy off as being authentic) the fact that it does use authentic artwork is tricky, and maybe the most grey of greys involved proxies dont interfere with the rights-holders from selling cards because, well, the rights-holders dont get ANY money from the secondary market to begin with
