Amp Field (Z)

You charge the ground with a 10-foot square of crackling lightning centered on a point within range. When the lightning appears each creature within the area must succeed on a Dexterity saving throw. A creature wearing metal armor has disadvantage on the saving throw. Creatures who fail the save take 3d6 lightning damage, and cannot take reactions or use any of their movement until the end of their next turn. On a success they take half damage and can act normally.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.