The XFL is considering a rule change that would allow multiple forward passes per play.
During an appearance on this week's ProFootball Talk PM podcast, XFL commissioner Oliver Luck said the league is "toying with the idea" of making it legal to throw a forward pass multiple times on a given play as long as the ball does not pass the line of scrimmage.
If the XFL adopts the rule, a quarterback would presumably be allowed to throw the ball again if he has the ball batted back to him on the first attempt. Quarterbacks in the NFL can only run with the ball when that happens.