Probably a top speed of 30?
Can trample ppl and how about if the enemy is close, then the horse kicks them? Well no real horses can't realy make out who's enemy and whos not.
Can you fire guns off the horse?
Maybe have a swipe weapon only on the horse where you select this sword and ppl in a 5m radius of the left side of the horse or whatever side the sword is on get damaged or killed depeending on proximty.
Ohhh and you could make a unicorn and flying horse you know from ancient times and............... :-X :noo: