I want be damned

@HorsesandMuchMOAR  
That stuff is great. Someone needs to make art for your ‘villain’ valentines.

BUUURN IN THE FIRES OF INFERNO!  
 
I regret nothing

So gimme fuel, gimme fire, gimme that which i desire

@Ardashir
 
I can think of some:
 
Chrysalis: “Feed me with your love, or I will starve and take it from you!”  
Discord: “Shall we mess things up together, or will you be part of my mess?”  
King Sombra: “Come into the deepest shadows of my heart, or be lost in it.”  
Sunset Shimmer/Midnight Sparkle: “Grant me much power, or I shall take it from your dead hands!”  
Gaea Everfree: “Let me wind my way into your heart, or be consumed by the power of Nature!”  
Starlight Glimmer: “You are my perfect equal. Now do as I say or I will even you up!”  
Adagio Dazzle: “Let my declaration of love draw you closer to me. You will never have a choice.”

That’s one effective argument. Is there a similar one for any of the other villains?

Like fire, hellfire, this fire in my skin  
This burning desire, is turning me to sin!