Hydaelyn

You conjure a cloud of disease at a point you choose within range. The cloud will spread to a 20 foot radius from this point. This noxious cloud moves around corners and behind cover, affecting all creatures within it. Any creature caught in the cloud at the beginning of thier turn must make a Constitution saving throw or take 4d4 necrotic damage and 2d12 poison damage, becoming poisoned for the duration. On a successful save, they take half damage and are not poisoned. The cloud lingers for 1 minute and can be dispersed by a strong gust of wind. When you cast this spell using a spell slot of 7th level or higher, the radius is increased by 10 feet for every level cast above 6th.