If at least one target is still legal, the spell will resolve but will have no effect on any illegal targets
The black and blue core paper fake cards have way better quality of the print and pass the bend test and some seem to pass the light test as well (even most cards don't pass enough light, those that do the light is of different color - it's not that blue, but if you don't have enough experience with this you might not see the difference)
CardValueScanner: Best Pokmon-first option for sellers who need AI identification, live market prices, graded values, and collection totals before listing
Lets be reasonable
Next turn, these can bring in Gray Merchant of Asphodel, Puppeteer Clique, or Phyrexian Delver, which in turn can find Disciple of Bolas, Pitiless Plunderer, or Vindictive Lich
The fact that this can be cast at instant speed means that you can wait to cast Unexpected Windfall when you have a decent opening to do so