Blade of Darkness

You surround your weapon with Darkness. and once it is used it disapeares additionally once it makes contact it spreads along the target causing them to take 3d4 necrotic damage on movement You can use your action to make a melee spell attack with the Darkness blade. On a hit, the target takes 3d8 necrotic damage.

The Dark blade sheds darkness in a 10-foot radius and dim darkness for an additional 10 feet.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for every two slot levels above 2nd.