Destabilize

You extend your hand towards a creature you can see within range and create a magical arc. The target must make a constitution saving throw. On a failed, a target takes 3d6 lightning damage and has disadvantage on checks made to maintain concentration and if the target has a fly speed with the hover trait, it loses the hover trait for the duration. Additionally, if a spell they cast becomes the target of a counterspell or dispel magic spell, the caster rolls their check with advantage. On a successful save, a target takes half that much damage and suffers no additional effects.