OOC: In battle/combat, the best way to counter moves is giving detailed replies. With more details, your opponent has less room to "assume" what you character did. E.g. if I had only said that Rhaegar had slashed, you could easily make it's direction and other unmentioned qualities up on your own. If these information are given by the poster, this counts as GM. If they are not, you are free to assume and make your preferences facts.
“I bet you deny the changing climates too. The Starks would love to meet you.” thought Rhaegar while listening to the man’s denial of arrest. Of course, he hadn’t thought he would go down quietly but neither did he expect to see him kick his stall over in his direction. By stepping back and swinging his sword down, he avoided being hit from the wooden stall. Once his eyes were set upon the man again, he was already holding a large hammer in defense. “A hammer against Valyrian steel, eh?” With a grin, Rhaegar slowly increased his speed and dashed towards the blond man. As soon as he was within his reach, he would make a downward diagonal slash across the man’s chest, going from left to right.