Elemental Glass Shard

You get to choose between attacking with your weapon and utilizing the range of the weapon, or the spell's actual range. You attack a target with either your Spell Attack Roll or your weapon's Attack Roll but you don't deal damage when you hit, you leave a small, colorful yet spectral glass shard into the target. Afterwards, you can use a Bonus Action to cause the shards to burst off elemental energy and deal 1d4 damage. The damage type is of any but must be selected upon casting this cantrip. A target can only have a number of these glass shards equal to your proficiency bonus.

At further levels, you are attack more than once with this specialized spell attack; you can attack twice at 5th level, thrice at 11th level and quadruple at 17th level. These attacks can be aimed at one target or multiple targets.

At 5th level, you can choose to make an attack roll onto the target and cause all of the shards to burst, or still use a bonus action. At 17th level, you are able to apply your feats involving spells and weapons into the damage rolls.