Quotes / Sealed Evil in a Duel

Joker: I think you and I are destined to do this forever!
Batman: You'll live in a padded cell forever!
Joker: Maybe we could share one.

Barbossa: So what now, Jack Sparrow? Are we to be two immortals locked in an epic battle until Judgement Day and trumpets sound, hm?
Jack: Or you could surrender.

Avacyn emerged from the broken Helvault, but her freedom came at a price—him.
Thalia, Knight-Cathar, Magic: The Gathering, Griselbrand flavor text

Raava: My name is Raava. That spirit you freed is Vaatu. He is the force of darkness and chaos. I am the force of light and peace. Since the beginning of time, we have battled over the fate of this world. And for the past ten thousand years, I have kept darkness under control and the world in balance.

It's time for my special attack. Are you ready? Here goes nothing.
Yep. That's right. It's literally nothing. And it's not going to be anything, either. Heh heh heh...ya get it? I know I can't beat you. One of your turns...you're just gonna kill me. So, uh. I've decided... it's not gonna BE your turn. ever. I'm just gonna keep having MY turn until you give up. even if it means we have to stand here until the end of time. Capiche?
Sans the Skeleton, Undertale

Dormammu: You will never win.
Dr. Strange: No... but I can lose. Again, and again, and again, and again, forever. And that makes you my prisoner.
Dormammu: No! Stop! Make this stop! Set me free!

Swapnil Khan: Quiet, isn't it?
The Celestial Toymaker: That's how it'll stay, since you won't play.
Swapnil Khan: I will not break my resolve. How long will the electricity last, do you think?
The Celestial Toymaker: A thousand billion years, two thousand billion, perhaps. You're better placed to say than I.
Swapnil Khan: Oh yes, I have your powers - or almost I have them; and I will almost have them forever, I suspect.
The Celestial Toymaker: An eternal checkmate. The axe stayed above the head of the king until the end of time.