Blessing of Hadar

You allow the Dark Hunger to seep into your body, mutating it strange ways.  Small eyes appear all across your body, your own eyes turn black, and small writhing tentacles pierce your flesh.  For the duration of the spell, you gain a truesight of 30 feet.  You also gain 40 temporary hit points.  When you hit a creature with a melee attack, you deal 1d10 extra necrotic damage.

While the spell is active, you have advantage on Strength (Intimidation) and Charisma (Intimidation) checks, but disadvantage on Wisdom (Animal Handling) and Charisma (Persuasion) checks.