Blood Snow

Frostburn (Fr)Supplementals (3.5)
School
Necromancy
Casting Time
1 standard action
Components
V, S
Range
Medium (100 ft. + 10 ft./level)
Duration
1 round/level
Saving Throw
Fortitude negates
Spell Resistance
Yes

You must cast this spell on a snow field.
You corrupt an area of fallen snow, imbuing it with negative energy.
Each round, a creature in contact with blood snow must succeed on a Fortitude save or take 1d2 points of Constitution drain.
In addition, anyone failing a saving throw is nauseated for the duration of the spell.