Arcane Bombardment

Before the spell ends, when you cast a 2nd-level spell that targets only one creature and doesn't have a range of self, you can target a second creature in range with the same spell. When you do so, this spell immediately ends. To be eligible, a spell must be incapable of targeting more than one creature at the spell's current level.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the spell effects the next 3rd-level spell you cast before the spell ends that is eligible.