When used in a cost, the snow mana symbol {S} represents a cost that can be paid with one mana of any type produced by a snow source (see rule 106.3). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. The {S} symbol can also be used to refer to mana of any type produced by a snow source spent to pay a cost. Snow is neither a color nor a type of mana.
June 14, 2019 · Modern Horizons
The snow mana symbol {S} represents one mana in a cost. This mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4g). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. Snow is neither a color nor a type of mana.
May 3, 2019 · War of the Spark
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4g). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. (There is no such thing as “snow mana”; “snow” is not a type of mana.)
January 25, 2019 · Ravnica Allegiance
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4g). Effects that reduce the amount of generic mana you pay don't affect {S} costs. (There is no such thing as "snow mana"; "snow" is not a type of mana.)
April 27, 2018 · Dominaria
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4g). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. (There is no such thing as “snow mana”; “snow” is not a type of mana.)
May 1, 2014 · Journey into Nyx
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4f). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. (There is no such thing as “snow mana”; “snow” is not a type of mana.)
February 1, 2014 · Born of the Gods
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4f). Effects that reduce the amount of generic mana you pay don’t affect {S} costs. (There is no such thing as "snow mana"; "snow" is not a type of mana.)
September 30, 2011 · Innistrad
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 205.4f). Effects that reduce the amount of generic mana you pay don't affect {S} costs. (There is no such thing as "snow mana"; "snow" is not a type of mana.)
June 17, 2011 · Commander 2011
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be
May 1, 2011 · New Phyrexia
The snow mana symbol {S} represents one generic mana in a cost. This generic mana can be paid with one mana of any type produced by a snow permanent (see rule 204.4f). Effects that reduce the amount of generic mana you pay don't affect {S} costs. (There is no such thing as "snow mana"; "snow" is not a type of mana.)