The Last Elf — Robert J. Trout

The Elfin Orb holds all the power of the Elves. Whoever possesses it can conquer and rule an empire. Craving that power, an evil king sends a young boy to search out and bring back the Orb. A princess, seeking to regain a throne, and an Elf, hoping to recover the Orb for his people, join him. Together, they journey through a land of unknown terrors. To fail in their quest dooms them all. To succeed crowns a tyrant. Only the Orb itself holds the answer, but finding it and unlocking its secret will test not only their courage but also their loyalty to each other.