Skaravojen, The Keeper's Pet

In 321 YK, assassins came perilously close to killing Traelyn Ghelios, the Keeper of the Flame. At the behest of High Cardinal Syketel, House Vadalis wizards bred (some would say created) a special guardian to protect and serve Traelyn and future Keepers of the Flame. The result is Skaravojen, an ugly six-legged beast that the Cathedral’s guards have taken to calling a “dragonhound.” Skaravojen is the only creature of its kind, and the secrets of its origin are kept safe by House Vadalis.
Skaravojen is a gentle, obedient creature most of the time. When it perceives a threat to the Keeper, it attacks viciously and does not stop until it or the threat is destroyed. Skaravojen is immune to enchantment spells and cannot be compelled to abandon or turn against its charge. Although capable of showing affection, it never forgets its duty. When a Keeper of the Flame is replaced, Skaravojen immediately attaches itself to the new Keeper and holds no particular loyalty to the previous one. If the Keeper dies while under its protection, Skaravojen hunts down the Keeper’s slayer tirelessly, using its discern location ability to home in on its prey.
Although she carries the burden of an entire nation on her slim shoulders, Jaela adores Skaravojen and at times engages it with games of fetch. Most of the clerics and cardinals who operate within the Cathedral give Skaravojen a wide berth, even when it’s apparently in a good mood.
When it attacks, Skaravojen rears up on its hind legs, using its tail for balance. It then gores with its horns and rakes with its forward claws. It can sense invisible creatures and detect evil at will. On all six legs, Skaravojen stands 3 feet tall at the shoulder and measures 5 feet in length (not including the tail). It weighs 300 pounds. Skaravojen cannot speak but can growl menacingly.