Armor Class 12 (natural armor)

Hit Points 26 (3d10 + 9)

Speed 60ft

Skills Athletics +5, Perception +3

Senses passive Perception 13

Challenge 1/2

Rider control. If rider is nearby, light warhorse has advantage on saving throws against charmed and frightened condition.   Combat trained. Light warhorse is proficient with light and medium armor. Also a rider on heavy warhorse gets a advantage on all checks to maintain control or not dropping from saddle.  

Possible traits

Any light warhorse can have two of those traits.   Mobile Charge. After galloping for 20 feet or more, this creature does not provoke attacks of opportunity when moving in or out of range of any enemy.   Harassment. If charging a unit smaller than itself, upon impact they must make a strength check, DC15, to avoid being knocked prone for one round. Anyone caught flat footed or fleeing is automatically knocked down.   Trampling Charge.creature and then hits it with a hooves attack on the same turn, that target must succeed on a DC 14 Strength saving throw or be knocked prone. If the target is prone, the horse can make another attack with its hooves against it as a bonus action.   Endurance. A light warhorse make Constitution saving throw against exhausted with advantage.   Run. A light warhorse can make a Dash as bonus action.