Lightning bug

The lightning bug spell merges magic missile with shocking grasp, allowing a spellcaster to generate a missile of electrical energy and cast it unerringly at a target. When it hits the target (or an electrical conductor that touches an opponent’s body), the lightning bug discharges, causing damage. When in flight, the missile appears to be the spell's namesake insect.

Note: This version of lightning bug originally appeared in the Volo's Guide to All Things Magical from TSR. Its use here is for the purposes of providing context for the campaign only.