Stormbringer is a Gorajo Summoning familiar that can be summoned in the Daemonheim in Dungeoneering. There are ten tiers of stormbringers, from lowest to highest:

According to the Stormbringers, they can perform magic without the need for runes as they carry the magical energy within their bodies. When a Stormbringer is born, they give out a burst of energy so strong that that they blind their mother and render her infertile during childbirth.