Aegon's Ensnaring Surge

Electricity arcs forth from you in a 30-foot cone. Each creature in that area must make a Constitution saving throw. On a failed save, a creature takes 3d8 lightning damage and is hindered by the electricity coursing through its body for 1 minute, or until it uses an action to fight through the surging power and free itself. A creature captured by the electricity has its speed reduced to 0. On a successful save, a creature takes half as much damage and resists the effects of the electricity.