This quest is not available in game.
Archmage Timear in Dalaran has foreseen that you must slay 7 Titanium Vanguards.
- Kill Titanium Vanguard × 7
The entirety of Azeroth is in peril. The mad god Loken has it within his power to put an end to everything!
Within the Terrestrial Watchtower at the Halls of Lightning, the titanium vanguards stand poised to execute Loken's dread will upon countless unknowing victims.
I have looked into the future, <name>. You are the one to see that this does not come to pass!