cantrip evocation inhaled poison 

Traditions arcane, primal

Cast [>>] somatic, verbal

Range 5 feet; Targets 1 creature

Saving Throw Fortitude

You exhale a shimmering cloud of toxic breath at an enemy's face. The target takes poison damage equal to your spellcasting modifier and 2 persistent poison damage, depending on its Fortitude save.

Critical Success The creature is unaffected.Success The target takes half initial and persistent damage.Failure The target takes full initial and persistent damage.Critical Failure The target takes double initial and persistent damage.

Heightened (+2) The initial poison damage increases by 1d8 and the persistent poison damage increases by 1.

Secrets of Magic, page 124.