Javelin of Lightning
Rare magic weapon (javelin)
Property: As an action, you can throw the javelin at a point within 100 feet of you. A 5-‐foot-‐ wide line of lightning travels from you to that point. Each creature in the line must make a DC 13 Dexterity saving throw. The creature takes 4d6 lightning damage on a failed saving throw, and half as much damage on a successful one. When you use the javelin in this way, it becomes a normal javelin until the next dawn, at which time the magical energy returns.
This wooden javelin was carved from an ash tree that was struck by lightning. The javelin is tipped with iron, and iron wires with thunderbolt designs trace the javelin’s length. When the weapon is handled, tiny bolts of lightning leap to the wielder’s hand from the shaft.