name: Winter's Night
originalText: Whenever a snow-covered land is tapped for mana, it produces one additional mana of the same type and does not untap during its controller's next untap phase.
printings: ALL, ME2
text: Whenever a player taps a snow land for mana, that player adds one mana of any type that land produced. That land doesn't untap during its controller's next untap step.
type: World Enchantment