There are now three Magic: The Gathering cards for Sting, the magic sword Bilbo claims from the troll hoard. To be fair, they're all mechanically distinct. In The Lord of the Rings set there was an artifact card called Sting, the Glinting Dagger, and an instant called Hobbit's Sting that did more damage the more food you had. Several the hobbit-themed cards are empowered the more food tokens you have piled up, which is a flavorsome idea.
The upcoming Hobbit set adds a card called Sting, Bilbo's Sword, which uses the new mechanic hone, which lets you add +1/+0 to a creature with equipment—a mechanic that mostly shows up on dwarf cards. As you may remember, there are a lot of dwarves in The Hobbit.
