Amplifying Mark

You create a glyph in the air within 60 feet, which emits a 10f pool of low-level light. Until the spell ends, you deal an extra 1d6 damage to the target whenever you hit it with a spell attack within 30 ft of this spell's Glyph, of the same damage type as your existing spell.

If the target drops to 0 hit points before this spell ends, you can use a bonus action on a subsequent turn of yours to mark a new anchor point for the spell and its dim light.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can add 1d6 to the damage dealt of the existing spell's type.