Thunderhoof Unicorns

"The unicorn bronco snorts indignantly, rearing back on powerful hind limbs. Its coat glistens black as midnight, and as its forhooves fall, they strike the earth with a powerful thunderclap."

Rain Bringer

Thunderhoof unicorns are steeds said to be demigods of storms and thunder. Legends say they run on the tops of the clouds and their hooves dislodge the raindrops, causing them to fall. When they fight, it cause thunder and lightning, and a stampede of thunderhooves causes a tornado.*

Dwindling Numbers

Fewer and fewer thunderhooves have been seen, and no one seems to know why they're disappearing. Are they leaving, or is something hunting and killing them?*

Praetorian Prey

Revealed by Cul and Loghain, the Praetoria have been hunting down thunderhooves for nearly a century. Their lightning-infused horns are the prized possesions of the paladin order, though to what end they still do not know, even to the once Knight Commander Loghain Tavinter.
*Source: Mutated Monsters