The Regenerated Chest is a limited edition Chance Chest that was released on April 3rd, 2015 and ended on April 6th, 2015. The new Dragonforged released in this Chance Chest was the Phoenix Ward, which is a Mono Fire Dragonforged Armor.
1 Chest: 35 Gems
11 Chests: 350 Gems
24 Chests: 700 Gems
52 Chests: 1400 Gems
11 Chests: 5 Fire Fusion Boost Armors