Transmutation [Cold]
Level: Druid 4
Components: V, S, F
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: See text
Saving Throw: Fortitude half
Spell Resistance: Yes
This spell is the same as creeping cold, but the duration increases by 1 round, during which the subject takes 4d6 points of cold damage. If you are at least 15th level, the spell lasts for 5 rounds and deals 5d6 points of cold damage. If you are at least 20th level, the spell last for 6 rounds and deals 6d6 points of cold damage.
Focus: A small glass or pottery vessel worth at least 25 gp filled with ice, snow or water.
Source: Spell Compendium (Page 56)