rare electricity evocation 

Cast [>>] somatic

Range touch; Targets 1 hinge or latch

You create an electric latch rune hazard on the target, creating a special crystalline lock on the object. You can also substitute your spell DC for any of the hazard's listed DCs. You can have only one such hazard active at a time, and if you cast this spell while a previous electric latch rune is active, the older hazard discharges harmlessly.

Heightened (+2) The hazard's damage increases by 1d12.

Age of Ashes #4: Fires of the Haunted City, page 75.