The Skeleton King's Summoner is a Side Quest in Divinity: Original Sin Enhanced Edition. This quest is started by speaking with Arhu in Cyseal about Braccus Rex. You must have completed A Mysterious Murder before this.
(This quest appears to have been removed from the Enhanced Edition -
- Braccus Rex
- + 4200 XP
- + 1 Reputation
- Speak with Arhu before fighting Braccus Rex
- Complete The Undead Scourge
- Speak with Arhu after defeating Braccus Rex