134. Rules for Sealed Deck Tournaments In Sealed Deck tournaments, players may add as many basic lands as desired to their decks during deck construction, however, players may not add additional Basic snow lands, also known as “Snow-Covered lands”, in Limited formats that use the Ice Age, Alliances, and/or Coldsnap sets. Extra lands are allowed for sideboards, and players may add basic lands to their sideboards any time between games.
135. Rules for Draft Tournaments In Draft tournaments, players may add as many basic lands to their decks as desired; no maximum is imposed, however, players may not add additional Basic snow lands, also known as “Snow-Covered lands”, in Limited formats that use the Ice Age, Alliances, and/or Coldsnap sets. Extra lands are allowed for sideboards, and players may add basic lands to their sideboards any time between games.
Any snow lands, basic or otherwise, you draft or open in sealed are fair to use, however.
Let me get one thing straight with you. When Condor and an official ruling disagree, 50% of the time the official ruling gets reversed later. The other 50% of the time, the rules get clarified/changed to make the ruling right when it really wasn't before.
thnx to ".torrent" at Heroes of the Plane Studios
From the MTG Floor Rules
Any snow lands, basic or otherwise, you draft or open in sealed are fair to use, however.
MTG Rules Adviser/Advisor
Comp Rules, FAQs, and DCI Rules
Edit: Graaaaah sarnath'd