Trixie's Spectral Blade

You momentarily create a blade of spectral energy. Make a melee spell attack roll against a creature in range. On a hit, you deal 1d8 psychic damage. If its the first round of combat, the spell deals maximum damage and the creature is blinded until the start of it's next turn. 

At higher levels: When you cast this spell at 2nd level or higher, it deals an additional 1d8 psychic damage for each slot level above 1st.