Strike With Fire

A single flame streaks from your hand toward a target that you can see within range, then erupts into multiple flames.  The target must make a DEX saving throw.  On a failed save, the target takes 2d6 fire damage. On a successful one, the target takes half damage. Any creature within 5 feet of the target must make a DEX saving throw. On a failed save, that creature takes 1d6 fire damage, and half as much on a successful one. 

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