Vyz'olgo is so bugged that after I foolishly tried to complete the world quest for 5 minutes, I left only for him to follow me all the way back to Newhome. :
Skyreach glider skip - YouTube
Aggro'd this mob and it wont stop following me around. - Imgur
Category:Nazjatar quests - Wowpedia - Your wiki guide to the World of Warcraft
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Vyz'olgo the Mind-Taker followed me to Newhome. Evaded attacks until I relogged. Players and guards nuked it/him/her/? down. - Album on Imgur
Vyz'olgo is so bugged that after I foolishly tried to complete the world quest for 5 minutes, I left only for him to follow me all the way back to Newhome. :
TBC Day 37] Level 70 Nax/Gruul/Mag BiS Holy Priest PoV! - YouTube