Undead Thralls. When Xzar casts animate dead, he can animate or reassert control over one extra corpse. All zombies and skeletons created by Xzar have maximum hit points and inflict an additional 3 damage on any successful weapon attack.

Spellcasting. Xzar is a 9-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). Xzar has following wizard spells prepared:

Cantrips (at will): Chill Touch, Dancing Lights, Mage Hand
1st level (4 slots): False Life, Mage Armor, Shield
2nd level (3 slots): Misty Step, Ray of Enfeeblement], Web
3rd level (3 slots): Animate Dead, Counterspell, Vampiric Touch
4th level (3 slots): Blight, Evard's Black Tentacles
5th level (2 slots): Bigby's Hand, Cloudkill

Dagger. Melee Attack Roll: +6, reach 5 ft. Hit: 5 (1d4 + 3) Piercing damage.