Arcane Strike

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. You can use your spellcasting ability instead of Strength or Dexterity for the attack and damage rolls. The weapon is considered magical if it is not already.

On a hit, the target suffers the weapon attack’s normal effects plus 1d6 force damage. Additionally, all enemies within 5 ft of the creature must make a Dexterity saving throw or also take this force damage as a wave of force emanates from the struck creature.

This additional damage increases by 1d6 and the area affected increases by 5ft as you reach higher levels. At 5th level (2d6, 10ft), at 11th level (3d6, 15ft), and at 17th level (4d6, 20ft).