Caustic Arc

You unleash an arc of acid that leaps towards a target of your choice that you can see within range, before leaping to another target of your choice within 15 feet of the original target. Each creature can only be targeted once.

A target must make a Dexterity saving throw. The initial target takes 4d6 acid damage on a failed save. Each target after the initial one takes one less d6 of acid damage as the target before them. A target that succeeds on its saving throw takes half damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd-level or higher, the damage increases by 1d6 and can leap to one additional target for each slot level 2nd. Each new target must be within 15 feet of the previous target.