Pulverize

You create a loud, thrumming vibration that builds to a painful crescendo before fading. Creatures and objects in the area take 4d4 points of sonic damage, and they can make a Fortitude save for half damage. If the floor, walls, or ceiling of the area has a hardness of 8 or less, it is pulverized up to 6 inches, resulting in an area of soft dust, wood fragments, or loose crushed ice, as appropriate. Any creature moving across this surface is hampered as though moving on a bad surface (see Table 9-4: Hampered Movement in Chapter 9 of the Player’s Handbook). The dust and debris of a falling ceiling causes a cloud of dust that dissipates in 5 minutes. The cloud obscures all sight, including darkvision, beyond 5 feet. A creature 5 feet away has one-half concealment (attacks have a 20% miss chance). Creatures farther away have total concealment (50% miss chance). A moderate wind (11 mph+), such as from a gust of wind spell, disperses the dust in 4 rounds. A strong wind (21+ mph) disperses the cloud in 1 round. Using the power on a surface under water creates a cloud that lasts for 10 minutes. If used under water, spells or powers that clean water, such as the purify food and water spell, can be used to disperse the cloud. The cloud’s duration is decreased by 1 round for every cubic foot of water affected. For example purify food and water cast by a 13th-level caster would have its duration decreased by 13 rounds.