Elden Stars

You create a single golden comet that assails nearby creatures with a shower of shooting stars. It appears within 5 feet of you and begins moving towards a point within range. For the duration, the comet moves 30 feet towards the target at the end of each of its turns.
Each hostile creature that starts its turn within 30 feet ofthe comet or enters the area for the first time on a turn takes 10d4 radiant damage as the shooting stars strike it.
When the spell ends or when the comet reaches the point, it explodes with a powerful burst of energy. Each creature other than you within 30 feet of the comet takes 20d6 radiant damage.