acid attack cantrip evocation 

Traditions arcane, primal

Cast [>>] somatic, verbal

Range 30 feet; Targets 1 creature

You splash a glob of acid that splatters your target and nearby creatures. Make a spell attack. If you hit, you deal 1d6 acid damage plus 1 splash acid damage. On a critical success, the target also takes 1 persistent acid damage.

Heightened (3rd) The initial damage increases to 1d6 + your spellcasting ability modifier, and the persistent damage increases to 2.

Heightened (5th) The initial damage increases to 2d6 + your spellcasting ability modifier, the persistent damage increases to 3, and the splash damage increases to 2.

Heightened (7th) The initial damage increases to 3d6 + your spellcasting ability modifier, the persistent damage increases to 4, and the splash damage increases to 3.

Heightened (9th) The initial damage increases to 4d6 + your spellcasting ability modifier, the persistent damage increases to 5, and the splash damage increases to 4.

Core Rulebook, page 316.