(We don't need Rasul to be there, we just need me to get going with jace. But I can try and point him in the right direction.)
As Rasul is wandering around Ravnica, he sees a man runing, saying something along the lines of "Jace is going to kill me if I'm late again." Meanwhile, in Jace's study, Jace is pondering the two planeswalkers before him.
"There are beings out there, and other planeswalkers, who are trying to terrorize or destroy other planes. The phyrexians, the eldrazi, Nicol Bolas..." He paused for a second wondering if they knew about any of this. "We're joining up in an effort to stop these beings and protect the planes. It would help teach you more about your power, and you would get your adventure, I'm sure. But some people have the wrong idea about us, unfortunately. A Planeswalker from Kaladesh came to me recently and asked us to act as bodyguards at their inventors fair. That's not what we are. If you guys seriously want to join, I'm willing to let you. But from you, Alwin, I need to know if you have any connection to the planeswalker, Liliana Vess"