Eldritch Blade

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within reach, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects, and an additional 1d6 force damage as Eldritch energy assaults their form.

This spell forces follow up attacks when you reach higher levels. At 5th level, you make an additional melee attack, you make three attacks at 11th level, and four attacks at 17th level.