I am hoping someone can tell how to get mystic forge stone. I saw there are some guide for it but they are pretty old so not sure if they still work.
Trading post under the utility tab. You also get them from achievement chests and on occasion form the chest of black lion goods you get once a week from daily log in.
All the info is here: https://wiki.guildwars2.com/wiki/Mystic_Forge_Stone
But the short version is they only come from achievement chests, login rewards (as a random item from the Chest of Blacklion Goods) or buying them from the Gem Store.
Danielle Aurorel, Desolation EU. Mini Collector
"You can run like a river, Till you end up in the sea
And you run till night is black, And keep on going in your dreams
And you know all the long while, It's the journey that you seek
It's the miles of moving forward, With the wind beneath your wings"