Acid Bubbles

Bubbles filled with acid shoot out of your finger in a 5x30 foot line, dealing 2d6 damage plus your spellcasting bonus to anyone the bubbles touch. They last for three rounds before popping and burning anything beneath with acid. If attacked, the bubbles will explode along the line in a 10 foot radius, ending the spell early and dealing 1d6 damage plus your spellcasting bonus. You can end this spell early using a bonus action, with all the bubbles exploding in a 10 foot radius along the line and dealing 2d6 damage plus your spellcasting bonus. Anything hit with this spell must roll a DEX saving throw, taking full damage on a failed save and half as much on a successful one.