His smirk turns cautious. Oh, she's a sly one, indeed, and that makes her just as dangerous as he is- but at the same time, he's fascinated. He might avoid fights if and when he can, but he'll stick his hands into any fire if it means sating his own curiosity and drive.

"And the mark of a careless warrior is revealing all your tricks at once." He wags a finger, gently, rolling over his words in a languid, flippant lilt. "When you do that, you expose your weaknesses and limits. It's always to your advantage for an opponent to believe you're weaker than you are." He adds, a bit more seriously, his voice dropping an octave. "And... Even more important, it's safer for your allies as well."