You create a 20-foot-radius sphere of poisonous, yellow-green fog centered on a point you choose within range. The fog spreads around corners. It lasts for the duration or until strong wind disperses the fog, ending the spell. Its area is heavily obscured. When a creature enters the spell's area for the first time on a turn or starts its turn there, that creature must make a Constitution saving throw. The creature takes 5d8 poison damage on a failed save, or half as much damage on a successful one. Creatures are affected even if they hold their breath or don't need to breathe. The fog moves 10 feet away from you at the start of each of your turns, rolling along the surface of the ground. The vapors, being heavier than air, sink to the lowest level of the land, even pouring down openings.
At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.
SRD 5.1, p.125 · CC BY 4.0
Try this spell in RollQuest
Cast Cloudkill on a real battle map. Pick a caster and a target and RollQuest plays the effect for everyone at the table. Free to start.
Run Cloudkill through our free DnD 5e character sheet
Give Cloudkill to your character and cast it straight from the sheet. RollQuest rolls the dice with your spellcasting modifier, posts the total in chat for the table and keeps count of your spell slots. See how our DnD 5e character sheet works, for 5e and 5.5e.