Eldritch Spike

You fire a crystalline spike of eldritch energy at a creature in range. Make a Ranged Spell Attack, on a hit the target takes 1d4 Force damage. If you hit the same target five or more times you can cause the Spikes to erupt with with eldritch energy as a bonus action. Each spike deals an additional 1d4 Force damage.

At Higher Levels:

At Higher levels the damage of the spell increases, at 5th level (2d4), at 11th level (3d4) and at 17th level (4d4).