Cone of Cold

Cone of Cold deals 3 + X/3 (rounded down)
damage to all opponent creatures, planeswalkers
and players.
"We didn't expect the Narrow Pass to be choked with
snow this early in the season. Personally, I think a
Storm Giant Mage sent a blizzard in the pass to slow
us down. It took all my troops three days to dig a path through that cold mess." - From the war journal of
Arius, first Champion of Order forces