[That almost makes him shake, to call those past transgressions 'grudges'. But he keeps himself steady.]

I won't pursue anything. I'm here to warn you.

[Not a trace of his hick accent here. Not for something this important.]

Your powers are limited here, and your army is gone. There's no reason for you to hurt anyone, and your twisted goals can't be accomplished here. Your only choice is to live here peacefully as one of the people.

... But if you even think you can try to change any of that, I have no problem showing you how wrong you are.