Discharge

Tendrils of electricity burst out from you striking those around you.  Each creature in a 30 foot radius of you must make a dexterity saving throw. On a failed save, a creature takes 6d6 lightning damage and can’t take reactions this turn. On a successful save, the creature takes half as much damage and doesn’t receive the other affects of the spell.

Creatures wearing metal armor or constructs made of metal have disadvantage on the saving throw.