I swapped my 120 Tauren Paladin to Human recently. Since then I’ve completed Nazjatar to the point of getting world quests. And I’ve also done the intro to Mechagon quests, I think the last one was helping with a construction project. But Magni won’t show up in najatar with the 8.3 questline about wrathion. On my Orc warrior he showed up after I got the portal from Najatar to Zuldazar.