So I'm having difficulty understanding the key word "Marshaling action:", it appears on the Maester Cressen card for example. Does this mean that the action can only be used during the Marshaling phase, or when the character is Marshaled?

The RRG is your friend.

"Some Action abilities have a phase name as a qualifier

to the word “Action.” Such abilities are still considered

Action abilities, with the restriction that they can only be

initiated during an action window in the specified phase."

"Actions", p. 3

The RRG is your friend.

"Some Action abilities have a phase name as a qualifier

to the word “Action.” Such abilities are still considered

Action abilities, with the restriction that they can only be

initiated during an action window in the specified phase."

"Actions", p. 3

Have no idea how I missed that, thanks a lot!