Twenty is fine. He can do twenty in...minutes, probably. Hang on just a second.

[And, with one silent and effortless command, Star appears at Jotaro's side, eyes already glued on the cards in inherent curiosity.]

...Okay. Now let me just...

[And, closing his eyes, he half-turns away and tries to make his thoughts into a blank slate, unsure of how to will Star into the freedom to make this kind of decision on his own, but figuring that a reasonable place to start is by trying to free him of any possible influence that might bias him.]

...Okay. Go.