I would like to ask a question regarding the effects of the All-Out Attack. It says that all Transformers can attack, but does it only attack tapped characters or both tapped and untapped characters? There are cases where in situational events like brave or stealth, etc. happen. The purpose of this is to settle local disputes in a local event, so I would like to have it explained to not be falsely exploited.

We usually only settle regional disputes and larger, but well make an exception here. The only thing All-Out Attack does is allow each of your characters to attack during the turn rather than the usual one character. It doesnt change any other rule about what characters can or cannot attack or which opposing characters can or cannot be attacked. Your tapped characters still cannot attack, and Brave and Stealth still apply.

Source: Wizards of the Coast (2019-06-28)    【Link to Ruling】

Tags: All-Out Attack, All-Out Attack, All-Out Attack