Vortex Strike

You shroud your limbs or a weapon in a swirling vacuum of destructive force. For the duration, your attacks gain the following properties: Your successful attacks with what is coated in the Vortex each turn deals an additional 1d10 Force damage. When you hit a creature with this strike, you can force them to make a Strength Saving Throw. On a failure, they are pulled 10 feet closer to you, or knocked prone (your choice). If you reduce a creature to 0 HP while this spell is active, the vortex "pops." You immediately regain your Action or Bonus Action for this turn (you choose), and your next attack roll before the end of your next turn is made with Advantage. When you reach 5th level, the damage increases to 2d10. At 10th level, it becomes 3d10. At 15th level, it becomes 4d10.