That is obvious enough from their massive 11/11 stat line
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
With offspring, that's two damage, and it's easy to see where this is going - it's an alternate win condition in grindy games and its unearth ability means it can come back to provide that effect for one extra turn whenever it's most relevant
Youll often find these out of stock, in other languages, or in poor condition, though
There being so many cards in this set, and them being specific to a franchise, makes both unlikely
(Here are Selesnya, Azorius, Izzet, and Golgari.) This is the second batch of guild theme weeks