In a dedicated artifacts deck, if Edgar, King of Figaro comes down and draws you three or four cards, its absolutely busted
My favorite Sliver pair in this deck are Basal Sliver and Lazotep Sliver
Six mana to cast a free spell on upkeep is pretty nice, but when you consider its one mana less than Minds Dilation and can give you most of the same effect, but in red
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
Cards that can change themselves from state A to state B are not threshold cards