20 cards where the text includes “infect” and the set is “nph”

Blighted Agent (New Phyrexia #29)
Chained Throatseeker (New Phyrexia #30)
Fallen Ferromancer (New Phyrexia #82)
Glistener Elf (New Phyrexia #111)
Glistening Oil (New Phyrexia #62)
Lost Leonin (New Phyrexia #13)
Melira, Sylvok Outcast (New Phyrexia #115)
Ogre Menial (New Phyrexia #89)
Pestilent Souleater (New Phyrexia #149)
Phyrexian Swarmlord (New Phyrexia #119)
Phyrexian Unlife (New Phyrexia #18)
Razor Swine (New Phyrexia #92)
Reaper of Sheoldred (New Phyrexia #72)
Shriek Raptor (New Phyrexia #24)
Spinebiter (New Phyrexia #121)
Toxic Nim (New Phyrexia #75)
Triumph of the Hordes (New Phyrexia #123)
Viral Drake (New Phyrexia #49)
Viridian Betrayers (New Phyrexia #124)
Whispering Specter (New Phyrexia #77)

This search is finished. Now the real work can begin.