Death Wish

• WWizards of the Coast2004-10-04
  Official Ruling
  Can't acquire the Ante cards. They are considered still "in the game" as are cards in the library and the graveyard.
• WWizards of the Coast2007-05-01
  Official Ruling
  If you fail to find something, you still lose half your life, rounded up.
• WWizards of the Coast2007-09-16
  Official Ruling
  Can't acquire cards that are phased out.
• WWizards of the Coast2009-10-01
  Official Ruling
  You can't acquire exiled cards because those cards are still in one of the game's zones.
• WWizards of the Coast2009-10-01
  Official Ruling
  In a sanctioned event, a card that's "outside the game" is one that's in your sideboard. In an unsanctioned event, you may choose any card from your collection.

Rulings via Scryfall