If he was close enough, Tony might have reached out to feel the warmth of her hand flushing the glass, but he was prepared for that. His seat just out of arms reach, he only flicked a restless finger then worried his knuckles again. "Yeah?" he replied with a laugh then rolled his shoulders back, stretching out the tension that wasn't supposed to be there. Mystique was contained, after all, he had nothing to worry about. "Give me a second, I'll put the suit on," he offered, mirroring her smirk only as long as it took for his full grin to bloom and he had to bite his lip, slouching back down into his seat carelessly. As sure as he was about the Iron Man, Tony didn't think anything would keep him safe in that little box if she set her mind to it. Maybe if he had a little more space, he'd have the advantage.
With a deep breath, pushing away from that dangerous game, he could almost promise in earnest, "I won't be gone for long." Not that he wasn't fairly certain of that, but he wasn't sure he wanted it to be true. Then he might just crawl into that cage with her and let her tear him apart-- would that be too easy? "Come on, give me something," he demanded, his fingers already itching for their next task, rocking up in his seat to jump to his feet. "A cigarette? Let's do that," he said, nodding for her and turning to search the drawers of the bank behind him. Mostly first aide, pens, a flashlight, plastic utensils and the weird shit they had taken off of dudes in terrible costumes. Cigarettes, but of course, no gum, why would a bad guy carry gum? Tony would have to light two, approaching Mystique's cell cautiously like he thought that was enough to set her off and pull some stunt, but safe of course until he pressed his thumb to the security pad that prompted the tiny vent in the glass to slide open.