The Mystic's Chest was a limited Chance Chest running from ? to May 18th, 2015.
It had a 8x for Legendary and Epic armor, and a chance for Dragonforged armor.
Cost:[]
1 Chest: 35 Gems
11 Chests: 350 Gems
24 Chests: 700 Gems
52 Chests: 1,400 Gems
Guaranteed Bonus:[]
11 Chests: 5 Spirit Fusion Boost Armors
24 Chests: 10 Spirit Fusion Boost Armors and a Vesture of Kitsune+
52 Chests: 20 Spirit Fusion Boost Armors and a Naga Platemail+