Warden's Prey

When Warden's Prey enters your graveyard, you
may reveal cards from the top of your library until
you reveal a wraith. If you do, put that wraith onto
the battlefield tapped, put the rest of the cards onto
the bottom of your library, and then shuffle.

He held his breath as best he could, praying the warden would move on. Little did he know, this pursuit would just be the beginning of Thresh's delighted torments…