It's common to see power level threads, and threads asking who would win if X vs Y (e.g: Goku vs Superman).
So I was wondering what power would be the ultimate one?
The only rule in this thread is that the power must have been made in a existing work (in short, you can't make a power up).
I might make some more up if this thread goes on (for example, people might bring up nuances and unique parts of their work of fiction's universe [Kryptonite. Magical energy. ???]).
I'll lay some out:
Immortality (http://tvtropes.org/pmwiki/pmwiki.php/Main/Immortality)
I mean, if you're immortal then you can't possibly lose right?
Mystic eyes of Death Perception (http://typemoon.wikia.com/wiki/Mystic_Eyes_of_Death_Perception)
Even if the enemy is "immortal", if you can destroy their very existence itself, then it doesn't matter.
The Power of Absolute Obedience (http://codegeass.wikia.com/wiki/Lelouch_Lamperouge#Geass)
Immortal or Death God, once you have someone under your complete control, they're as good as dead since they are now your slave.