On the floor? Tony's eyes swing to the circle for a moment before flicking back to Constantine, with all the flat pressed incredulity one might expect of a haughty feline, all subtly lifted brows, pursed lips. Really? Tony Fucking Stark, sitting on the ground in the middle of a magic circle.

Stranger things have happened. Not that he can recall at the moment but, with an eyeroll and a huff (he did come here for information, he can't be all that picky) he steps into the ring and settles with his legs crossed, momentarily distracted by the construction of the circle. Glyph? Sigil? Strange's had a distinctly East Asian look to them, all fractal construction and unreadable runes. Similar flavors of different coolaid seem to be at work here, he'll figure out what makes them work (if they work) later. "Right. Time travel. Possible via magical manipulation of some sort of quantum singularity that exists as one of six infinity stones back home- I can't believe I just said that- it's gone MIA. I need another way to make it happen."