flavorText: Discovered by Femeref mages, the Null Chamber is the ultimate testing ground for the uncreative.
name: Null Chamber
originalText: You and target opponent each name any card except a basic land. Those cards cannot be played.
printings: MIR
text: As this enchantment enters, you and an opponent each choose a card name other than a basic land card name.
  Spells with the chosen names can't be cast and lands with the chosen names can't be played.
type: World Enchantment