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Wrath of winter
shaman attack 1

Target: one creature

Attack: Wisdom vs. Fortitude

Hit: "1d10 + Wisdom modifier cold damage. You can teleport your spirit companion to a space adjacent to the target."
Level 21: "2d10 + Wisdom modifier cold damage."[PH2:122]

Wrath of winter is an at-will power available to shamans at 1st level.