Cloudkill
Level 5 Conjuration
Casting Time
1 action
Components
V, S
Range
120 ft (20 ft sphere)
C
Duration
Up to 10 minutes
You create a 20-foot-radius Sphere of yellow-green fog centered on a point within range. The fog lasts for the duration or until strong wind (such as the one created by Gust of Wind) disperses it, ending the spell. Its area is Heavily Obscured.
Each creature in the Sphere makes a Constitution saving throw, taking 5d8 Poison damage on a failed save or half as much damage on a successful one. A creature must also make this save when the Sphere moves into its space and when it enters the Sphere or ends its turn there. A creature makes this save only once per turn.
The Sphere moves 10 feet away from you at the start of each of your turns.
Verbal Component:
Nimbus Kedavra Maxima
Each creature in the Sphere makes a Constitution saving throw, taking 5d8 Poison damage on a failed save or half as much damage on a successful one. A creature must also make this save when the Sphere moves into its space and when it enters the Sphere or ends its turn there. A creature makes this save only once per turn.
The Sphere moves 10 feet away from you at the start of each of your turns.
At Higher Levels
The damage increases by 1d8 for each spell slot level above 5. 
Sorcerer, Wizard
Print on 8.5"x11" paper. For best results, use the following printer settings: Print at 100% (do not shrink, or enlarge); Turn on "print with background graphics;" hide "header and footer" (if given the option); and turn on "Borderless printing" (Internet Explorer). Best to print in color. Note: Microsoft Edge DOES NOT support printing background colors or images, so we do not recommend printing the cards in the browser.