Music
 
“You are a fool, sister. You know you are no match for me.”  
“Of all ponies in Equestria… why you??? You were stronger than this!”  
“I am stronger than you ever imagined! I can feel the universe tremble at my approach! Even the GODS know my name!”  
“Nopony will remember you, traitor! I will see to that!”
 
“Pathetic… You were great once, before doubt addled your will. Before you rendered judgment on the Crystal Empire; before you murdered the innocent and guilty, all in one stroke! You weak, sorry fool!!! How does it feel to have slain millions; TO HAVE BETRAYED YOUR OWN FAMILY???”  
“I betrayed NOPONY! Innocents die so that Equestria may live! I ended their suffering, as I will end yours!”
 
“You have beaten me… I cannot believe it… I was wrong, sister; so wrong… I thought I was strong; strong enough to control it! I wanted to use the power for good; for Equestria! You must see that! You must… give me the chance to make amends! To seek redemption!”  
“If redemption is what you seek… then that is what I will give you…”
 
“This is the fate of traitors! Remember this, and do not stray! If you do, I will be ready to render you the same service…”

Such beauty and majesty, and all I can think of is “pew pew pew!”