Wall of Salt

This spell creates a gleaming wall of salt crystal that merges into adjoining rock surfaces.   The wall can seal off a passage or breach, or be used to construct new walls.   A wall of salt is 1 inch thick per caster level.   You can double the wall's area by halving its thickness.   The wall cannot be conjured so that it occupies the same space as a creature or another object.   You can form a wall of salt into nearly any shape desired.   The wall need not be vertical, nor rest upon any firm foundation; however, it must merge with and be solidly supported by existing stone.   It can be used to bridge a chasm or as a ramp.   If such a span is more than 20 feet long, the wall must be arched and buttressed, reducing the spell's area by half.   For example, a 10th-level caster could create a salt span with a surface area of five 5-foot squares.   The wall can be crudely shaped to allow crenellations, battlements, and so forth, by likewise reducing the area.   The wall can be destroyed normally by a disintegrate spell or by chipping and breaking.   Each 5-foot square of the wall has 3 hit points per inch and hardness 2.   A section of wall whose hit points drop to 0 is breached.   If a creature tries to break through the wall with a single attack, the DC for the Strength check is 15 + 1 per inch of thickness.   Directing a constant blast of water at a wall of salt (for example, a geyser from a decanter of endless water) dissolves the mineral, dealing 10 points of damage per minute (which hardness does not reduce).   It is possible, but difficult, to trap mobile opponents within or under a wall of salt, provided the wall is shaped so it can hold the creatures.   Creatures can avoid entrapment with successful Reflex saves.   Arcane Material Component: A crystal of rock salt.
 

You conjure a gleaming wall of translucent salt crystal that merges seamlessly into adjoining stone surfaces. The wall can seal a passage, block an entry, or form crude battlements or ramps.   The wall is composed of ten panels, each 5 feet wide, 5 feet tall, and 6 inches thick. You may halve the wall’s thickness to double the number of panels created.   The wall must be anchored firmly against existing stone or earth but can be formed in any shape you choose — vertical, horizontal, or even arched (though a span longer than 20 feet must be arched and buttressed, halving the total area of panels you can create).   If the wall cuts through a creature’s space when it appears, the creature is pushed to one side of the wall (your choice). If a creature would be surrounded on all sides by the wall (or the wall and another solid surface), that creature can make a Dexterity saving throw. On a success, it can use its reaction to move up to its speed so that it is no longer enclosed by the wall.   Each 5-foot section of the wall has 10 hit points and hardness 2. If a creature tries to break through the wall, they must make a DC 15 Strength check. Reducing a panel to 0 hit points destroys it and might cause connected panels to collapse at the DM’s discretion. The wall is particularly vulnerable to water; a continuous stream of water deals 10 acid damage to the wall, ignoring hardness. A disintegrate spell destroys a section of wall instantly.   If you maintain your concentration on this spell for its whole duration, the wall becomes permanent and can’t be dispelled. Otherwise, the wall disappears when the spell ends.   At Higher Levels. When you cast this spell using a higher level spell slot, you create two additional panels for each slot level above its base level.