Surtr

Surtr, also seen as Surtur, was the lord of the fire giants. His animal was the hell hound. His symbol was a flaming sword. Surtr looked like an immensely large fire giant with crackling flames for hair and eyebrows. He wore armor of blazingly hot iron and wielded a flaming iron sword 15 feet (4.6 m) in length.
Surtr, a son of Annam, was part of the second generation of giantish deities, born at about the same time as Skoraeus Stonebones and Thrym. While Surtr’s cult was similar to that of Thrym’s, fire and ice do not mix.
Surtr ruled Muspelheim, an ever-burning realm on the fiery second layer of the plane of Ysgard; the layer was also called Muspelheim, named for Surtr’s realm. Surtr’s domain contained portals to the City of Brass and to an efreeti outpost called the Suhkteh Albarrana where fire giants often hired themselves as mercenaries to the genies of flame. The realm of Muspelheim could also be reached through certain volcanic regions on the first layer of the plane.
At the highest point in the earthberg upon which Surtr had built his realm was a range of mountains called the Serpent’s Spine. The only liquid in the realm was the Lake of Lead, a body of molten metal where the fire giants drowned their criminals. Other prominent sites included the town of Njarlok, a blacksmithing site called the Forges of Surtr, and the magical tower of stone known as Surtr’s Spire.
Worshipers
Nearly all of Surtr’s worshipers are giants, but a select few members of other races have earned his approval. They conceal their devotion to the giant lord.
Surtr taught that fire was pure, cleansing, and strong. The weak and impure burned, while the strong survived. Fire was useful as a tool, but must be respected. It was dangerous when uncontrolled.
Fire giant priests were normally architects or smiths. Those few who weren’t were charged with the responsibility of keeping the rest of the tribe productive, largely by recounting inspirational tales.
Clerics of Surtr wore war helms and iron plate. Their color was fiery red, and Surtr’s favored weapon was the greatsword.
Surtr’s temples in the lands of men were hidden affairs. Those that were not hidden were huge buildings ringing with the sounds of forges and storing weapons in preparation for the battle at the end of the world. Visitors had only a few seconds to prove their intentions before the fire giants attacked. Fire giants did not enjoy leaving witnesses to their activities.
The holy day of Surtr was the Summer Solstice. Surtr did not demand sacrifice or propitiation.