Dominate a captain via a Power Struggle to gain intel on a Warchief. (Keep this captain alive in case there isn’t a bodyguard.)
Mark the Warchief. Start his mission, draw him out and let him kill you.
Mark and go to his bodyguard. Dominate the bodyguard and put a death threat on the Warchief. Do not kill the bodyguard. (Use the captain from earlier if no bodyguard.)
Return to the Warchief. Brand as many Uruks as you can and let them land the killing blow on the Warchief.
Intel +1
Revenge +1
Death Threat +1
Warchief +2
Power Level +25