Crossroad Hammers

Source: Natalie's Setting

Light Hammers, rare (requires attunement)

Hammer's with they symbol of Idia, god of travelers and inns. You have a +1 bonus to attack and damage rolls made with this magic weapon.

As an action you can throw one of the hammers to call down a bolt of lightning in a cross shaped pattern. A lightning bolt strikes a target location up to 60' away and four bolts extend 10' in either each cardinal or intercardinal direction. Each creature in the area excluding you must make a DC 13 Dexterity saving throw, taking 3d6 lightning damage on a failed save, and half as much damage on a successful one. The hammer's property can't be used again until the next dawn.

While attuned you can use a bonus action to call the hammers back to your hands. The hammers must be within 300' for this to work.