Sting (Middle-earth)
Sting has the magical ability to detect orcs or goblins nearby, glowing blue in their presence, as it did when the Fellowship encountered orcs in the mines of Moria. Tolkien establishes this as a common property of First Age Elf blades, particularly those forged in Gondolin. Sting is also exceptionally sharp. Bilbo manages to thrust it without effort deep into a wooden beam at Rivendell. Frodo also wounds a troll in Moria, after Boromir notches his own sword with his attempt. Sam uses Sting to cut through the giant spider Shelob's strong webs with ease, and also wound the spider, driving it away from the paralyzed Frodo.
Smaug
Smaug () is a dragon in J. R. R. Tolkien's 1937 novel "The Hobbit". He is a powerful and fearsome dragon that invaded the Dwarf kingdom of Erebor 150 years prior to the events described in the novel. A group of thirteen dwarves mounted a quest to take the kingdom back, aided by the wizard Gandalf and the hobbit Bilbo Baggins. Smaug is described as "a most specially greedy, strong and wicked worm".