Lightning serpent

Lightning serpent was a wizard spell, during the period between the Spellplague and Second Sundering, that fired a serpent-shaped bolt of lightning.

Effects
When cast lightning serpent caused a bolt of lightning to crackle from the spellcaster's hand, which took take on a serpentine appearance as it flew towards the single target of choice. In addition to electrical damage, the target would become poisoned and their movements would become slowed down.

The spell's effectiveness could be enhanced by the use of implements.