Regarding the Assassin Droid card ([0385]), it removes one focus token after it destroys an enemy unit. Does this mean that it can be used to strike again in the same engagement provided it destroys a unit in one stirke? By extension, can it keep strking inefinately in the same engagement if it destroys the unit in each strike? And, lastly, is it forced to focus one last time (after all units are destroyed) to fulfill the forced focus each unit must do during an engagement?
Thanks in advance!