Short answer for your question is that a fireball spell is not a ranged weapon, and wind wall is not a solid barrier so they do not interact with each other.
How does Cloudkill spread?
The caster can’t move the cloud directly, but it does move on its own. At the start of each of the caster’s turns, the cloud moves 10 feet away from the caster, “rolling along the surface of the ground.” The cloud is heavier than air, so it sinks to the ground and even passes through holes or grates in the ground.
Can you see through wind wall 5e?
The Strong Wind keeps fog, smoke, and other gases at bay. Small or smaller flying creatures or Objects can’t pass through the wall.
How does wind wall work?
The wall lasts for the duration. When the wall appears, each creature within its area must make a Strength saving throw. A creature takes 3d8 bludgeoning damage on a failed save, or half as much damage on a successful one. The strong wind keeps fog, smoke, and other gases at bay.
Where does the wind wall spell end Cloudkill?
The Wind Wall spell only creates strong winds within its AoE: outside of that ‘normal’ winds apply. Since Cloudkill depends on these ‘normal’ winds not being ‘strong’, the Cloudkill effect is ended where it overlaps the Wind Wall. I would be forgiving and allow the wind wall spell to dissipate the cloudkill.
Can a wind wall blow a cloud away?
The strong wind from wind wall isn’t acting like a normal wind, it isn’t just blowing everything everywhere in the direction of the wind. So, it wouldn’t blow the whole cloud away, but it would separate the cloud where it was cast. The sizes of these things matter.
What are the effects of Cloudkill in RuneScape?
Forced Movement. Since cloudkill deals damage when a creature starts its turn in the cloud and the first time on a turn that it enters the cloud’s radius, your allies can use abilities that force enemies to move to hurl them into the cloud. Such effects include command, fear, thunderous smite]
What’s the weakness of the 2nd level Cloudkill spell?
It also has the troubling weakness of being able to be dispersed by strong wind, such as those created by the 2nd-level spell gust of wind. All this to say, while cloudkill may look like another area-of-effect damage spell, its actual applications are much subtler.