There are 153 unique foil-etched cards that can be found inside the Collector Booster
17 Brimaz, Blight Of Oreskos Double Up Phyrexians Suggested Cards: Massacre Wurm, Progenitor Exarch, Norn's Inquisitor Although Brimaz, Blight Of Oreskos doesn't directly support any infect creatures, where Brimaz does play into the infect strategy is the ability to proliferate if a Phyerxian died
It played well with Rakdos spectacle mechanic from that set
I counted all the differences: take the 38,768 unique cards, account for 58,779 in additional foils and treatments, plus 718,172 non-English cards, 5,278 non-playables (the tokens, art cards, etc.), 755 playtest cards, Arena's 221,930 cards in their languages, and 29,252 MTGO cards and you arrive at our total of 1,072,934
More than six legs or fewer than two, and youre out
Because the English print lacks foil, any copy that shines is a definitive red flag for a counterfeit