Rulings

• 2011-09-22
  No one can cast spells or activate abilities between the time a card is named and the time that Nevermore's ability starts to work.
• 2011-09-22
  Spells with the chosen name that somehow happen to already be on the stack when Nevermore enters the battlefield are not affected by Nevermore's ability.
• 2011-09-22
  Although the named card can't be cast, it can still be put onto the battlefield by a spell or ability (if it's a permanent card).
• 2011-09-22
  You can name either half of a split card, but not both. If you do so, that half (and both halves, if the split card has fuse) can't be cast. The other half is unaffected.
• 2011-09-22
  If you want to name a double-faced card, remember to name the front face of that card. (The back face can't be cast anyway.)
• 2011-09-22
  The named card can be cast again once Nevermore leaves the battlefield.
• 2021-03-19
  If you name one of the faces of a modal double-faced card, players may still play the face you didn't name. (Players can never cast the back face of a transforming double-faced card)