Arrow of Mekezid

You create a floating arrow that lasts for the duration. The arrow flies to a space of your choice, and you can immediately make one melee spell attack against one creature within 5 feet of the arrow. On a hit, the target takes piercing damage equal to 1d4 plus your spellcasting ability modifier.

As a Bonus Action on your later turns, you can move the arrow up to 30 feet and repeat the attack against a creature within 5 feet of it.

Cantrip Upgrade. The damage increases by 1d4 when you reach levels 5 (2d4), 11 (3d4), and 17 (4d4).