Dark Echo

You send forth an echo of your physical form, formed from shadows, to attack a creature within range. Make a ranged spell attack. On a hit, your dark echo deals 1d10 necrotic damage to the target. After making the attack, the echo dissolves into shadowy mist, and the target has disadvantage on attack rolls against you until the start of your next turn.

This spell deals more damage when you reach higher levels: 2d10 at 5th level, 3d10 at 11th level, and 4d10 at 17th level.