Lug Novas, Fallen Lord

When Lug Novas, Fallen Lord enters the battlefield, return all creature cards from your graveyard to the battlefield.
At the end of your turn, pay {3}{b}. If you don't, exile each creature you control, then shuffle Lug Novas, Fallen Lord into its owner's library.
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Upon the day the fallen one fell, he took many with him into the uprising.