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Caustic Smoke in Dungeons & Dragons 5e
Mordenkainen's Lost Notebook
Caustic Smoke
3-level Conjuration
You create a 20-foot radius sphere of acidic green smoke centered on a point you choose within range. The smoke spreads around corners. It lasts for the duration or until strong wind disperses the smoke, ending the spell. Its area is heavily obscured. In addition to obscuring sight, the cloud deals acid damage per round to all creatures within. 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 2d6 acid 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. Further, creatures which fail their saving throw are blinded; once the creature leaves the spell’s area it can repeat the saving throw at the end of each of its turns. On a success, the blindness ends. The smoke moves 10 feet away from you at the start of each of your turns, rolling along the surface of the ground. The smoke, being heavier than air, sinks to the lowest level of the land, even pouring down openings.
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