This narwhal's name is Bort. Bort singlehandedly destroyed the Spanish Armada because he had a thang on the side with Queen Elizabeth. A Bort-siting led to the myth of Leviathan. Bort dragged the Mayflower to Plymouth Rock. He's a pretty average narwhal.
If you catch a Narwhal, it will ask you three riddles. If you answer these correctly*, the narwhal will consider you its master, and be forever in your debt. IMMEDIATELY RELEASE THE NARWHAL FROM ITS DEBT. A narwhal servant is too much power for one man.
*The answers are "Time", "My own hand" and "A mirror reflecting the 14th sunset."