This sword has a slender, curved, single-edged blade of gleaming bright steel. The blade is is razor sharp and exceptionally well-crafted, with a leather-wrapped handle that follows the curve of the weapon. The silver-plated circular guard is inscribed with elven scrollwork runes.
Fiendfell was the sword of Saint Arwyn Elsiter, one of the founders of the Pilgrim Knights. A tassel of silver pegasus mane hairs, taken from Arwyn's loyal steed Cuinor upon its death, hangs from the pommel. For a long time, the sword was a prized heirloom of House Elsiter, but it was stolen in the chaotic years after the Teccan Empire fell.
While attuned to the sword, you have a +2 bonus to attack and damage rolls with Fiendfell, and it can be used as a holy symbol. When you use a Smite spell on an attack from Fiendfell, all damage dice dealt by the spell explodes.
Additionally, you can hold the weapon aloft and cast Spirit Guardians, summoning a flock of tiny pegasi. Once you do this, you cannot do so again until you finish a long rest. You can also use your own spell slots to cast the spell.