I seen this on wowwiki:I have seen many different statements on these.When you complete both [85] The Shadow Wardens and [85] Druids of the Talon, the phase at Malfurion's Breach advances slightly, with the Sentinel Tree growing significantly, and three NPCs appearing, each requiring [Mark of the World Tree] x125 to unlock their wares:
From this I am seeing we do both sides so thats 300 marks there, then we have to do 125 for each vendor. So in total to open up these 3 vendors we have to get 300 + 125 + 125 + 125 = 575 marks. Am I doing this right? Am I missing more requirements?