Question: how to summon aiji the accursed?
Answer: Comment by varenne Aiji the Accursed rare is located in Sunken Path / Xal'vor Nazmir on Zandalar isle. You will see An Ancient Curse near the rare location. Take it and it will spawn 5 altars in the Xal'vor ruins. You need to activate all 5 to summon the Aiji the Accursed.