Spellcasting. Sanbalet is a 3rd-level spellcaster. His spellcasting ability is Intelligence (spell save DC 13, +5 to hit with spell attacks). He has the following wizard spells prepared:
Cantrips (at will): dancing lights, minor illusion, ray of frost
1st level (4 slots): charm person, color spray, magic missile, silent image
2nd level (2 slots): magic mouth, scorching ray
Dagger. Melee or Ranged Weapon Attack: +3 to hit, reach 5 ft. or range 20/60 ft., one target. Hit:3 (1d4 + 1) piercing damage.
In The Sinister Secret of Saltmarsh, Sanbalet is the leader of the land-based half of a smuggling ring. He is a cunning narcissist with an interest in illusion and mind control. He defends the contraband stored in the caves under the haunted house.