The Dreadlord's Array collection contains two premium cosmetics for Kerillian: the Drakira's Grin hat and Dreadguard's Mantle skin.

The cosmetics can be used on Kerillian’s Shade career.

About the cosmetics:

Drakira’s Grin - Hat
Mask of a Naggarothi corsair. Not the most practical of garb, but you'll linger in folks' memories for a fair old while.

Dreadguard’s Mantle - Skin
Intimidating armour worn by a favourite of Malekith's court - a position that seldom offers longevity.