Crush Armor

You bring your sword to the air and slam it to the ground causing a spectral blade to pierce the target from beneath. Make a ranged spell attack against the target. On a hit, the target takes 2d8 magical slashing damage. The extra damage is 1d8 for each Spell Level higher than 1st, to a maximum of 5d8. For the next round, all attacks gain advantage on the target creature.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st to a maximum of 5th.