Dissociative Edge

When you cast this spell, your weapon hums with violent energy. The first time you could make a melee weapon attack before the end of your current turn, you can launch a scything blade of force from your weapon instead.

Each creature within a line 5 feet wide and 30 feet long must make a Dexterity saving throw, starting from the creature closest to you. The first creature that fails takes [roll]2d8[/roll] force damage and suffers damage and effects as though you had hit them with a successful attack using that weapon.