Just got KSM (first time for me!) and I got an Emerald Mark of Mastery, that I can trade for a hero track tier piece at a tiny dragon in the Emerald Dream. But according to WoWhead, he can also trade myth track pieces for that stone? Do I need to get to a higher rating or something to be able to buy those myth track pieces?
Thinking it might be worth keeping the stone if I can use it later to get a myth track tier piece instead of a hero track piece.
The mark of mastery is used for hero 1/6(elite pvp pieces) or 3/6(pve pieces, but you might as well get the elite piece if you’re not a pvp person for the free transmog