Plague Cloud

Necromancy [Evil, War]

Level: Clr 4, Drd 4, Sor/Wiz 5, Adept 5

Components: V, S, M

Casting Time: 10 minutes

Range: Long (400 ft + 40 ft/lvl)

Effect: 100 ft cloud radius, 20 feet high

Duration: Concentration (up to 1 round/lvl)

Saving Throw: Fortitude Negates

Spell Resistance: Yes

You create a sickly gray cloud that is heavier than air and laden with disease. At the time of casting, you may choose blinding sickness, cackle fever, filth fever, mind fire, red ache, the shakes, or slimy doom. Any creature the cloud comes in contact with must make a save vs fortitude or contract the chosen disease, with an onset period of 5d6 minutes. The cloud may be moved by wind or other spells, but cannot move on its own. It disperses automatically when the spell expires, although those inflicted are not so lucky.

Material Component: A concoction of otyugh blood, bonemeal, and powdered silver that costs 3,000 gold and requires an alchemy DC 14 to create, with failure ruining the concoction.

A great number of spells may be found at the Hypertext D&D Resource [1] as well as the D&D Wiki [2].