
All nonsnow creatures get -X/-X until end of turn, where X is the number of snow permanents you control.
Dead of Winter has 1 printing, first in Modern Horizons (2019). EDHREC ranks it #10,818 among Commander cards. It appears most in Acererak the Archlich decks (144 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.