If you already finished the arena then you can't do this.
You will need the spell Risen Flesh and the Skull Of Corruption.
During the fight you must win to become champion, kill everybody.
SAVE
Cast risen flesh on the yellow team champ.
Then clone her with th skull of corruption.
Kill her clone .
Before she hits the ground, save again.
Make sure that when you save the game, your 'crosshairs' are on her.
Load the game and press 'a' really fast.
You will go into her invitory and you may get the yellow team heavy raiment and 3 .
Missing name lower your weight by however many you have but DO NOT DROP THEM.
It will restart the game but not harm it at all.
I was just screwing around and I found this out.