Snow-Covered Swamp

Some cards have additional effects for each snow mana spent to cast them. You can cast these spells even if you don't spend any snow mana to cast them; their additional effects simply won't do anything.

The snow mana symbol is a generic mana symbol. It represents a cost that can be paid by one mana that was produced by a snow source. That mana can be any color or colorless.

Snow isn't a type of mana. If an effect says you may spend mana as though it were any type, you can't pay for snow mana using mana that wasn't produced by a snow source.