Yar-Kul, the Maggot

{1}{b}, {t}, Sacrifice Yar-Kul, the Maggot: Create Yargul, a legendary 3/1 black Frog creature token with "{t}, Sacrifice this creature: Search your library for a card
named Yargle, Glutton of Urborg and put it onto the battlefield, then shuffle your
library."
"I... will... persist."