Hell Flame Wreath

Hell Flame Wreath, also known as the Spectral Arm of The White Dragon, is a dragon-type Longinus Sacred Gear appearing during the countinuity of DxD: Next Generation.

Sealed inside is The Blazing Empress Dragon, mate of Zekrom the The Lightning Emperor Dragon, Reshiram.

Summary
During the events of the Dragon Festival, Zekrom fought against the new fallen angel leader Azrael and lost. As with all the other dragons, including her mate Zekrom, were sealed into new Sacred Gears, hers becoming one of the New Generation Longinus.

Abilities
As with the name it describes the abilities, Hell Flame Wreath controls the flames that Reshiram generates, these flames gaining a demonic property over the years that she has been sealed in Hell Flame Wreath.

These flames have special properties, besides the demonic ones. They are special blue flames that can be generated, ones that give off cold and chill, like liquid nitrogen in flame form nicknamed 'Freezerburn Flames'.

The flames generated can be molded into shapes, like tendrils or ropes, granting good adaptability.

It also has a high amount of strength and punching power, with it's arm being able to cause small craters.

Forms
The manifested form of Hell Flame Wreath is no wreath.

Instead it takes the form of a flaming spectral arm over the user's dominant arm, covered in a hexagonal armor that leads into a rectangular one.

Dragon Beast
Dragon Beast, also known as The Dragon's Soul Manifested, is the Balance Breaker of Hell Flame Wreath. Coating the user's body in flames, they expand and transform into the figure of a large beast made of live flames, covered in markings with long claws, and small wings on it's back. This beast possesses the mind of the user, and gains absurd physical strength.

Trivia

 * Sacred Gear is based on the legendary dragon Pokemon Reshiram of the Tao Trio.
 * Images for the Gear and BB are from the anime/manga Shaman King.