Thorn Spray

You create a blast of wicked thorns that puncture deep into the flesh of your foes.  Each creature in a 15-foot cone must make a Dexterity saving throw.  On a failed save, target creatures take 4d4 piercing damage and, until the end of your next turn, any attack that hits an effected creature deals additional piercing damage equal to your spellcasting ability modifier.  On a successful save, target creatures take half damage and no other effects.  

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 2d4 for each slot level above 1st.