Tunnel Swallow

You unleash the power of this spell, and the walls of the tunnel begin to roil and shift on all sides, clenching in rapid succession as they fling your opponents down the hallway.   You cause a section of tunnel to flex with peristaltic convulsions, crushing its contents and moving them along its length in the direction you designate. Each creature and object in the affected tunnel section is crushed for 1d6 points of damage per level (maximum 15d6) and is moved from its former position to a point just outside the affected tunnel section. A creature that makes a successful Reflex saving throw takes only half damage and is moved halfway from its former position in the tunnel toward the designated end of the tunnel section. When the spell duration expires, the tunnel returns to its former shape and size, with no harm done to its structure.   Tunnel swallow affects both worked and natural tunnels, as well as corridors in surface buildings, but does not harm the structure.   Movement caused by this spell does not provoke attacks of opportunity.   Material Component: A lump of chewed vegetable or meat.
 

You cause a section of tunnel to flex with peristaltic convulsions, crushing its contents and moving them along its length in the direction you designate. Each creature in a section of tunnel 50 feet long and up to 20 feet in diameter must make a Dexterity saving throw, taking 10d6 Bludgeoning damage and being pushed to the nearest unoccupied space outside the affected tunnel section on a failure, or half as much damage and moved halfway from its original position to the designated side on a success. The tunnel then returns to its former shape and size, with no harm done to its structure.   Tunnel swallow affects both worked and natural tunnels, as well as corridors in surface buildings, but does not harm the structure.   Movement caused by this spell does not provoke attacks of opportunity.