What it does
Blizzard is a relatively new mechanic (from the Modern Horizons era) tied to snow permanents. A creature with blizzard, or a card granting blizzard effects, cares about how many snow permanents you control—often scaling abilities, dealing damage, or weakening opponents' creatures based on that count.
The common confusion: "snow" isn't a card type, it's a supertype. Snow-covered basic lands, snow duals, and any permanent printed with the snow supertype all count, but a regular Plains or Mountain does not. People also forget that snow mana (the 
symbol) and "snow permanents" are different requirements—paying with snow mana needs mana produced by a snow source, while blizzard typically counts permanents.
In Commander, blizzard rewards a dedicated snow-matters build. Swapping your basics for snow-covered versions is essentially free upside, enabling these payoffs without sacrificing much consistency.
symbol) and "snow permanents" are different requirements—paying with snow mana needs mana produced by a snow source, while blizzard typically counts permanents.
In Commander, blizzard rewards a dedicated snow-matters build. Swapping your basics for snow-covered versions is essentially free upside, enabling these payoffs without sacrificing much consistency.Iconic cards with Blizzard
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