Dark Barrage

You create seven glowing darts of magical force. Each dart hits a creature of your choice that you can see within range. A dart deals 1d20 + 10 force damage to its target. The darts all strike simultaneously, and you can direct them to hit one creature or several. Also after they find their targets each dart explodes and deals 3d12 thunder damage if they save with a CON 20 DC Save or half as much if they fail.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell creates three more darts and adds 1d12 to the thunder damage for each slot level above 1st.