Obsidian Flow

Standard Action | V, S, M/DF | Close | 20 ft radius
Instantaneous | Reflex partial | No
Convert a thin layer of the ground to molten
glass that cools quickly (1d6 damage per two
caster levels and entagled, max 10d6, Reflex half
and no entangle) Make a Strength check or
Escape Artist check to break the entangle (move
action, DC is spell DC). The area is difficult
terrain. Falling prone causes 1d6 damage.