Relic Revival

When Relic Revival enters the battlefield, search your library for a Zombie card and put that card into your graveyard. Then shuffle your library.
{5}{b}{b}{b}, Sacrifice Relic Revival: Return all Zombies from your graveyard to the battlefield tapped.
"Fossils have richer stories to tell - about the lub-dub of dinosaur life - than we have been willing to listen to."
- Robert T. Bakker