What does the narwhal horn do?

Nikola Tesla invented Narwhals in the early 20th Century to be used as a source of perpetual energy; the average narwhal is between 85% and 90% raw heat, by dry weight. However, since 1914, narwhals have been used primarily for the mineral concretions that form in their kidneys, which make a delicious soup popular in Korea and some parts of Russia.