So, I have an idea about making NPC that will sell Master Buffs (as classic MBs as celebrate and worgen "forever"). This npc hasn't to be a VENDOR, selling tokens like Sayges ones, so people can't bug it. I suggest to make it a NPC scripted like Teleporter NPC. You must donate for MB token, than get it in-game. When you talk to the NPC you choose what buff you want to get, and it teaches you that spell. Of course this token will dissapear after getting the buff. That's what I wanted to share with you, hope you'll like it ... Greetings.