On a Pale Horse

On a Pale Horse is a passive death knight ability, available at level 22. It increases mounted speed.

Trivia
Reference to the last of the Four Horsemen of the Apocalypse in the Book of Revelation, chapter 6, verse 8: "And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth."