para,about the luna weekly.You need to take quests from npc eli.She is found at pandemonium and norsvold near obelisk.She asks you to get quest item,each week you can get 1.I usually loot box at the far right side.After 7 weeks,you can then complete the quest and turn it in to eli for a key,then reenter instance using reentry feature and open chest.Hope it helps.
each chest btw will let you choose if you want some greater mythic supplement,one other item I forgot and last a abundle of archdaeva manastones 15 pcs,which has 6 pcs in each bag.SO a total of 90 stones + 6 of your choice.And one tip,it cannot be opened unless you are archdaeva,and isn't tradeable unless you are able to open it .So open with a level 66 character and trade to whatever toon you want
each chest btw will let you choose if you want some greater mythic supplement,one other item I forgot and last a abundle of archdaeva manastones 15 pcs,which has 6 pcs in each bag.SO a total of 90 stones + 6 of your choice.And one tip,it cannot be opened unless you are archdaeva,and isn't tradeable unless you are able to open it .So open with a level 66 character and trade to whatever toon you want