A blazing wall of flame erupts from the ground at your command.

Daily   ✦     Arcane, Conjuration, Fire, Implement
Standard Action      Area wall 8 within 10 squares

Effect: You conjure a wall of fire that lasts until the end of your next turn. The wall can be up to 4 squares high. Any creature that starts its turn adjacent to the wall takes 1d6 + Intelligence modifier fire damage. Any creature that enters the wall or starts its turn there takes 3d6 + Intelligence modifier fire damage (a creature can take this damage only once per turn). The wall blocks line of sight. Each square of movement that includes one or more squares of the wall costs 3 extra squares of movement.

Sustain Minor: The wall persists until the end of your next turn.

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

Published in Player's Handbook, page(s) 163, Class Compendium.