Thirswik's Transcendental Traffic Decongestant

You point a finger and dark smoke instantly appears from the tip of your finger in a straight line for 60 feet.  The smoke line passes through solid objects. The smoke begins to turn a pinkish purplish hue and quickly dissipates.  Every creature within 5 feet of the line in any direction is affected by this spell.

Creatures affected by this spell are temporarily displaced out of phase with their plane of existence and into their own distinct pocket dimension.  While displaced in this way, they can continue to interact with objects and creatures on their original plane but they can not interact with the other out of phase creatures.  All items that are held by, worn by, or are in active interaction with a creature are displaced with the creature. If an item is dropped or is no longer in active interaction with a creature, it immediately synchronizes with the original plane.

Items that are in passive interaction with a creature do not get displaced.  For example, if two creatures are affected by this spell one of them could stand on a table and the second one could also stand on the same table.  The table does not get displaced from the original plane. If one of the creatures picks up a knife and attacks the other creature with it, the knife passes harmlessly through the other creature because they are out of phase.  If the knife is thrown, it would follow the standard rules of a ranged weapon attack as the knife is no longer out of phase by the time it lands.

This spell's effects continue until the end of your next turn.  If two creatures occupy the same space when the spell ends, they are immediately shunted to the nearest unoccupied space that they can occupy and take force damage equal to twice the number of feet they are moved.