On a Pale Horse is a passive death knight ability learned at level 61.
The speed bonus is multiplicative, not additive.
|Mount||Mounted Speed||Riding Crop**||On a Pale Horse|
|Normal flying mount||250%||275%||300%|
|Epic flying mount||380%||418%||456%|
|310% flying mount||410%||451%||492%|
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."