Unerring Flame

You create three glowing darts of magical fire. Each dart hits a creature of your choice that you can see within range. A dart deals 1d4 + 1 fire damage to its target. The darts all strike simultaneously, and you can direct them to hit one creature or several.  Each missile has a 25% chance to ignite the target doing and additional 1d4 fire damage each round.  A creature may take an action to put out the fire. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell creates one more dart for each slot level above 1st.