The stallion only relaxed for ease of doding, and skips away from the sword. He's not willing to meet the thing with his horn until he sees what kind of damage it can do. The last thing he needs is his horn chopped off by a sword that can cut through anything.
The sword switched effortlessly into his hand and he swung again, the sword seems to blur as it moves leaving a trail of white light behind it as it moves through the air "If offered the chance to use magic would you take it?" he asks as the sword nears domnu once more, Although it does not look like he is trying very hard to hit him.