All nonsnow creatures get -X/-X until end of turn, where X is the number of snow permanents you control.
Mana cost
2
B
Mana value
3
Printings
From
$0.36
EDHREC rank
#10522
Buy
Formats
Modern
Legal
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
14 Jun 2019
The value of X is determined only as Dead of Winter begins to resolve. It won’t change later in the turn if the number of snow permanents you control changes.
14 Jun 2019
Dead of Winter affects only creatures that aren’t snow creatures at the time it resolves. Creatures that enter the battlefield later in the turn won’t get -X/-X.