D is for Dagger
Welcome to the Underdark, young adventurer. It's a treacherous place, full of dark elves, Beholders, Ilithids, and many, many more nasties.
What's an Ilithid, you ask? You're too young. For now, here's one of the deadliest of weapons and a treasure you'll rarely see above ground.
And never, ever venture into any caves alone.