When cast on a tile, it will create an up to 5x5 area (with the targetted tile as center) of what looks like lava, regardless of any walls. Any naturally hostile enemies are periodically damaged for the duration; sparring targets and benign animals, even if engaged in combat, remain unaffected.
Supposedly, a high-power cast is able to destroy grass and trees, even if they are enchanted.
[[Category:Babel/F]]