I don't mean to be rude,but I think you mean a slephnir because a slephnir is the only type of horse that is born with armour on it.Anyho,let's get on to the picture.The edited picture is a slephnir in a forest.FYI,the red stuff you see isn't blood,it's fire.You see,the slephnir was minding its own buisness when a pheonix flew by and a little bit of fire landed on the ground and a forest fire started!
I find this rude, the lineart's owner never said that the horse was "Born with armor."
Now I'M not meaing to be rude, just stating some facts. And in Norse mythology, it is called a Sleipnir and has eight legs and no where did I see it say that is had armor on it at all.