Bane’s Favor

Lasts 1 minute (or until you make an attack.)

Effect: Shadowy, iron-black power coils around your weapon or hands as Bane marks you. Until the end of your next turn, you gain the following benefits:

• Your next attack deals an extra 3d6 necrotic damage.
• The attack has advantage.
• If the attack hits, the target must make a Wisdom saving throw (DC = 8 + your proficiency bonus + your spellcasting modifier.) 
• On a failure: the creature is frightened of you until the end of your next turn.
• If you drop a creature to 0 HP: You gain temporary hit points equal to your level + your spell casting modifier (minimum 5.)

You can use this feature 3 times per long rest.