"Haha! Well done son. Glad to have a handsome young man like you on board as my replacement...
...this body was getting old."
Prime Grom up to his old tricks again. This time going for a more indirect approach. Why waste time and energy fighting off groups of heroes or your pesky light side when you can sit back and gain legions of followers by giving them exactly what you tell them they want? And with a constant supply of mortal hosts eager to "take" your position, you'll never have to worry about outlasting your plans.