A wall of strong wind (50kmh^-1) rises from the ground at a location. You can make the wall up to 20m long, 6m high, and 30cm thick. You can shape the wall in any way you choose so long as it makes one continuous path along the ground.

When the wall appears, each creature within its area must make a

The strong wind keeps fog, smoke, and other gases at bay. Small or smaller flying creatures or objects can’t pass through the wall. Loose, lightweight materials brought into the wall fly upward, including ordinary physical projectiles (like arrows). Creatures in gaseous form can’t pass through it.