You replied too early.....I was in the process of scrapping that riddle.
ETA: Actually, whatever. You answered the most important part of both the scrapped version and the new version I was about to make, so you can go.
The new version, for posterity's sake:
I am the Wrestler
A prelude to defeat
To weaken the enemy
So he could be beat
I am the Champion
Of light
I will arise again
Against the darkness I will fight
I'm the Breaker
And I shall pay the cost
In order to restore
That which was lost
(If you want to solve this one as a bonus challenge, you're more than welcome to try, but the turn is yours regardless.)