Everburning Missile

You release a rocket of eternal flame, breaking down swaths of foes at once. You make a spell attack roll against a target within range, and on a hit they take 4d12 fire damage. The missile explodes upon hit, and so whether the attack hits or misses, every creature within 15ft of the target must make a Dex save else take 8d6 fire damage. This damage is also taken by the target of the attack, though they only make a save if you miss the attack roll.

At higher levels For each spell level higher than 4th used, deals an extra 1d12 on the initial damage and extra 1d6 on the aoe damage.