How to acquire an immortal horse

the-elder-scrolls-v-skyrim

I have purchased a horse or two on Skyrim and I accidentally keep killing them with fall damage getting to my destination. I heard of a horse given by the Dark Brotherhood that does not die to fall damage is it true, and if so how can I get it?

Best Answer

Shadowmere is a horse in The Elder Scrolls V: Skyrim, originally owned by Lucien Lachance. Astrid lets the Dragonborn borrow Shadowmere to travel to the Dawnstar Sanctuary for the quest The Cure for Madness. She then gives him to the Dragonborn as a reward for completing the quest

From http://elderscrolls.wikia.com/wiki/Shadowmere_%28Skyrim%29

Regarding Shadowmere's immortality:

Shadowmere is not essential and can die, unlike his counterpart in Oblivion. However, 10 days later, he will respawn at the location of his death. If Shadowmere dies in a river or lake, he will respawn after 10 days in the black pool near the Dark Brotherhood Sanctuary.

Source