Spellcasting. Zane Darkshadow is a 7-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 15, +7 to hit with spell attacks). Zane Darkshadow has following Wizard spells prepared:

Cantrips (at will): Eldritch Blast, Chilling Touch, Dancing Lights 

1st level (6 slots): Bane, Charm Person, Comprehend Languages, Find Familiar, Unseen Servant

2nd level (4 slots): Command, Hellish Rebuke, Darkness

3rd level (1 slots): Phantom Steed

Dagger. Melee Weapon Attack: +7 to hit, reach 5 ft., 1 target. Hit: 2 (1d4) piercing damage.

Hellish Rebuke. You point your finger, and the creature that damaged you is momentarily surrounded by hellish flames. The creature must make a Dexterity saving throw. It takes 2d10 fire damage on a failed save, or half as much damage on a successful one.