uncommon disease evocation 

Traditions arcane, occult, primal

Cast [>>] somatic, verbal

Area 15-foot cone

Saving Throw basic Fortitude

You channel a blast of powerful blightburn radiation from your hands. You deal 4d6 poison damage to creatures in the area. Creatures who fail their save are afflicted with stage 1 of blightburn sickness (see above; on a critical failure, the creature moves immediately to stage 2). The level of blightburn sickness caused by this spell is equal to twice the spell's level, and the disease's save DC uses the caster's DC.

Extinction Curse #5: Lord of the Black Sands, page 73.