You create a cloud of flame-resistant strands of adhesive webbing that billows and flows much like a bank of fog. The cloud moves away from you at a rate of 10 feet per round, rolling along the surface of the ground.

Figure out the cloud's new spread each round based on its new point of origin, which is 10 feet farther away from the point of origin where the caster cast the spell. Creatures trapped in the webbing remain trapped even after the cloud passes, but the area the cloud leaves behind does not count as difficult terrain.

Because the webbing is heavier than air, it sinks to the lowest level of the land, even pouring down den or sinkhole openings. The cloud of webbing cannot penetrate liquids, nor can it be cast underwater.

Web cloud creates a many-layered mass of strong, sticky strands. These strands trap those caught in them. The strands are similar to spiderwebs but far larger and tougher. These masses must be anchored to two or more solid and diametrically opposed points or else the web collapses upon itself and disappears. Creatures caught within a web become grappled by the sticky fibers. Attacking a Creature in a web doesn't cause you to become grappled.

Anyone in the effect's area when the spell is cast must make a Reflex save. A Creature in the cloud at the start of its turn must save against the cloud or be affected. If this save succeeds, the Creature is inside the web but is otherwise unaffected. If the save fails, the Creature gains the grappled condition, but can break free by making a Combat Maneuver check or Escape Artist check as a standard Action against the DC of this spell. The entire area of the web is considered difficult terrain. Anyone moving through the webs must make a Combat Maneuver check or Escape Artist check as part of their move Action, with a DC equal to the spell's DC. Creatures that fail lose their Movement and become grappled in the first square of webbing that they enter.

If you have at least 5 feet of web between you and an opponent, it provides cover. If you have at least 20 feet of web between you, it provides total cover.

The strands of a web cloud spell are flammable, but have fire Resistance 5. A flaming weapon can slash them away as easily as a hand brushes away cobwebs. Any fire can set the webs alight and burn away one 5-foot square in 1 round. All creatures within flaming webs take 2d4 points of fire Damage from the flames.