Text (CS): Choose one - Target nonsnow permanent becomes snow until end of turn; or target snow permanent isn't snow until end of turn. ; Draw a card at the beginning of the next turn's upkeep.
You draw at the beginning of the next player's turn. This may or may not be your turn. [Coldsnap FAQ 2006/06/14]
Note - Also see Modal Spells and Abilities, Rule G13.13.
