Seven Kingdoms: Seowyn's Crossing
Palangurth (in the common tongue “Far-slayer”) is a sword of Eladrin-make. It belonged to the Crown Prince of Tavanion, Belerion ap Kadishai. After his rescue from orcs by the Fire Wasp, he gave it to them as a sign of thanks and friendship. It was wielded by Kidalis Havengard, but he recently returned it to the Prince. It can be commanded to hurl itself at a foe, and, if it strikes, to teleport that foe back to its master.