Die Hard Dice metal 7-die set: Drakona Embers Cazn
"Born from violent combustions, Embers Dragons' ash-speckled scales make them distinguished from other dragons. Each of the Embers Dragons bear these markings and reign over their respective territories: Inra of the seas, birthed by hydrothermal vents, Nali of the flame, hatched in molten rock, Bacu of earth, born of explosive decaying flora, Sein of the skies, sprung forth from lightning, and Cazn of the rift, violently derived from the tearing of space and time...
"When a rift opens between planes, an incredible amount of energy and heat is released, influenced by both the planes it connects and the instability of the crossing. The most dangerous of these rifts bridge the Material Plane and the Feywild and are prone to sudden, violent collapse, often leveling the surrounding area on both sides. For Cazn dragons, however, this is the perfect nesting ground; so much so that there is fierce competition to hold territories surrounding these breaches of the planar weave. it's rumored, even, that ancient Cazn dragons will tear open their own massive rifts, but this phenomenon has never been observed."
--From the Die Hard Dice website