Forerunner of the Swine

When Forerunner of the Swine enters the battlefield, you may search your library for a Boar, Hog, or Pig card, reveal it, then shuffle your library and put that card on top of it.
Forerunner of the Swine's power and toughness are each equal to the number of Boars, Hogs, and Pigs on the battlefield.