cantrip electricity evocation 

Traditions arcane, primal

Cast [>>] somatic, verbal

Range 30 feet; Targets 1 or 2 creatures

Saving Throw basic Reflex

An arc of lightning leaps from one target to another. You deal electricity damage equal to 1d4 plus your spellcasting ability modifier.

Heightened (+1) The damage increases by 1d4.

Core Rulebook, page 335.