Too Much of a Good Thing
Slay the Muddled Prophet of Sseratus and then return to Hexxer Ubungo at The Argent Stand.
There. I've modified the mojo. Now when the prophet drinks it, not only will he lose some of his power, his mind will also be addled by the effects of the fungus. At least that's the theory. As for how to get him to drink it, might I suggest you simply throw it at him? No doubt he'll catch and drink it given the arrogance that he's displayed at the altar. Unless you can kill him, <Class>, your Argent Crusade is about to come to a terrible end.
Required Level
74
Recommended Level
76
Difficulty
80
83
Start
End
Side
Both
Locations
Progress
Is it over?
Did the modified mojo work?
Did you deliver vengeance for Sseratus by slaying his prophet?
Completion
Amazing! You've saved your people and the rest of Northrend from his madness.
Unfortunately there's more of this insanity occurring up in the higher tiers of Zul'Drak.
Rewards
You will be able to choose one of these rewards:
You will also receive: 12 
40 
28 27
Gains
Upon completion of this quest you will gain:
- 26450 experience