Calamity Missle

You create three darts of magical force. Each dart targets a creature of your choice that you can see within range. Make a ranged spell attack for each missile. On a hit, a missile deals 2d4 force damage to its target.

If the attack roll scores a critical hit, the target of that missile takes 5d4 force damage instead of you rolling damage twice for a critical hit. If the attack roll for any missile is a 1, all missiles miss their targets and blow up in your face, dealing 1 force damage per missile to you.

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.