Raven Chest

The  is a limited edition chance chest that began October 10th and finished October 15th.

The chest can only be opened by using 30 Gems. There is a 2x change for Legendary and Epic armor sets. It is also the debut of the new epic armor, the Aegis of Sky Majesty.

It would also appear that there is a bonus for opening 11 chests at once. The prize for opening 11 chests is 3 guaranteed Spirit Fusion Boost Armors.

Possible rewards
These are the currently confirmed rewards in the Raven Chest:
 * Maelstrom Irons
 * Blazeborne Vanguard
 * Beastmaster Battlegear
 * Blackfrost Raiment
 * Flowstone Battlegear
 * Embersteel Armor
 * Armor of the Infernal Lord
 * Black Kaleidoscopic Raiment
 * Aegis of the Dragon
 * Combustion Armor+
 * Aegis of Sky Majesty