#128 Snow mana for Coldsnap

[surtur2]

In the Coldsnap set, there is the added card <property>
"snow."

Also, once the above property is added, I'm not sure
whether the "snow mana" requirement for many cards
could be checked already, or whether it would require
some extra coding.

[Fabrice Daugan]

Logged In: YES
user_id=161099

swnow-covered land, and constraints on the use of these
manas is already implemented.
See "Snowfall" to see some mana restriction use.

[ashsaver]

Logged In: YES
user_id=1659337
Originator: NO

I actually don't think this will work. Snow mana is a constraint on "paymana" (only mana from snow-covered lands can be used) and Snowfall is a constraint on "givemana" (mana can only be used to pay for other things). If you have something like {1}{S} you need 1 colorless from any source and 1 colorless from a snow source, and there's no way to distinguish those two right now.