Leads to the Entrance

You may only cast this spell if you control "Mr. Bones Wild Ride".
Return all nonland permanents other than "Mr. Bones Wild Ride" from all player's battlefields to their owner's libraries.
Then Return all land permanents from all player's battlefields to their owner's libraries.
Then each player discards their hand and shuffles their graveyard into their library.
Each player then shuffles their library and draws 7 cards.