Amaris's Lightning Aura

You call forth a lightning aura to protect you. It surrounds you, sometimes crackling up to 10 feet away. 

As a bonus action, creautes of your choice in the affected area must make a dexterity saving throw. On a failed save, the creature takes 3d4 lightning damage and  and it can't take reactions until the start of its next turn. On a successful save, the target takes half damage, and is not affected by the spells secondary effect.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d4 for each slot level above 3rd.