509.6. At high OPL, flexibility on gameplay decisions is not intended as a tool to allow players to reverse decisions after an opponent is required to indicate information that reveals that decision to be a tactical error.
509.6.a. Example: Player A moves their 3 Might unit to a battlefield and passes focus. Player B indicates their 2 Might unit at that battlefield is now at 4 Might due to their legend, Wuju Bladesman. Player A can no longer change their decision to move to that battlefield and pass focus.
509.6.b. Decisions made based on inaccurately represented public information may still be rewound at the discretion of the head judge. Inaccurately representing information to try to get a rewind is cheating.