Ultimate Adventurer's Handbook
Sleight of Strike
1-level Illusion
Casting Time: 1 bonus action
Range/Area: Self
Components: S
Duration: Concentration, up to 1 minute
The next time you make an attack, you launch an intangible, illusory version immediately beforehand to obscure your actual strike. If the target doesn’t have blindsight or truesight, you gain advantage on the attack roll. Even if the attack doesn’t gain advantage, it deals an extra 1d10 psychic damage on a hit. Whether you hit or miss, the spell ends.
At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the extra damage increases by 1d10 for each slot level above 1st.