Yay, thank you Blizz!
Im out of the loop. Whats the time investment to get this?
where actually that forge is ? :D
Can you do this without starting the secrets of Azeroth stuff? Or do you have to be on the correct step?
From my own experience, simply handling an orb and then passing and/or receiving was enough to get the achievement. I buddied up with somebody and after a few throws of the orb the achievement popped for both of us before either of us even reached the forge. However, I cannot recall in that instance if the forge was fully charged as I did not take such notice, so maybe it was at that point that we both got the FoS.
My wife happened to be in the area of Valdrakken while the event was going on and got the achievement. She did not interact with any orb at any time.