Tripwire Field

You conjure a field of wires at a point of your choice within range. The wires fill a 20-foot cube from that point for the duration. The wires are difficult terrain and creatures can move vertically while in the area.

If the wires aren't anchored between two solid masses (such as walls or trees) the conjured wires collapse on themselves, and the spell ends at the start of your next turn.

Each creature that starts its turn in the wires or that enters them during its turn must make a Dexterity saving throw. On a failed save, the creature falls prone.