The Silence Between Two Strikes

You focus and separate the positive and negative energy around you creating a blade of raw arcing energy that shudders as it charges the air around it. This magic sword lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d8 lightning damage on a hit and has the finesse and light properties.

In addition, when you hit an enemy with this sword they are charged with raw potential energy, until the beginning of your next turn any attack made against them with this blade has advantage as the energy of the blade attempts to reunite with the charge of the enemy.

You may make one attack against a charged enemy with the blade as a bonus action.

Any attack with this weapon that hits a charged enemy causes a thunderous boom that can be heard up to 300ft away

If you drop the weapon it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.

At Higher Levels. When you cast this spell using a 3rd- or 4th-level spell slot, the damage increases to 3d8. When you cast it using a 5th- or 6th-level spell slot, the damage increases to 4d8. When you cast it using a spell slot of 7th level or higher, the damage increases to 5d8.