After some debate, the moderators have concluded that no rules adjustments are necessary for the forthcoming errata changes. Should any of the changes present particular concerns for you, we recommend adding the affected card(s) to your banlist for the time being. Undos remain at the discretion of the players and if no undo policy is state, the default one in rules shall be followed.
The errata from Donald X. about the former shapeshifters (Overlord, Band of Misfits,...) and the accompanying changes are now live on the server. We recommend the remaining players to familiarize themselves with the changes.
You can find a video from Burning Skull regarding the changes: https://www.youtube.com/watch?v=zgo6ubOPHJA