They said the GM mode is really extensive and you can do about anything. If you watch the video with matt mercer someone in battle actually tries to talk to a wolf and the GM just roleplays it like its a normal tabletop game. You can probably roll a dice when someone tries to apply a status on an enemy and determine if he gets that status or not and apply it yourself ignoring the ingame mechanics.
From what I understood Larian wants the GM mode to be super flexible where you can pause and edit ingame the way you want.
