hey antlers are signs of power remember the kings crown is suposed to represent the bulls horns meaning the supreme manlyhood of the 1st man of the clan/tribe

since we know that nomads love their horses more then their wifes and even their sons (with a horse you can ride to the next village and kidnap a new wife ever tryed riding a wife ??) thats a present for it´s horse a sign that he is the 1st amongst the horses

altough some of today´s russian nomads do use reindeer´s and ride them but i was always under the impression they where located around the polar artic like the one´s of finland so out of eb map (or on the fringe)

anyway that looks like an horse decorated in a pretigious way and not a mount for war consisting of reindeer