Issuing words of Primordial from frost-covered lips, you conjure an unstable wall of elemental ice and wind.

Encounter   ✦     Arcane, Cold, Conjuration, Implement
Standard Action      Area wall 5 within 20 squares

Effect: You conjure a wall of contiguous squares filled with frost and raging wind that lasts until the end of your next turn. The wall can be up to 4 squares high.
    Each creature that starts its turn adjacent to the wall takes 1d8 + your Intelligence modifier cold damage. If a creature moves into the wall's space or starts its turn there, it takes 2d8 + your Intelligence modifier cold damage, and it is slowed (save ends). A creature can take this damage only once per turn. Entering a square occupied by the wall costs 1 extra square of movement. The squares occupied by the wall are heavily obscured, and the wall blocks line of sight.

Update (2/17/2012)
Changed in December 2011 updates.

Published in Arcane Power, page(s) 119.