There are four roles to play in this roleplay at any one time:
1. The white combatant is the first person to post, they must fight...
2. The black combatant, who is the second person to post.
3. The fates decide how the fight progresses, and can be anybody who is not the white or black combatant. They are an invisible force, unable to be seen or perceived by any other character in any way, but both combatants must abide by their commands.
4. The aureate emperor, who decides whether the victor may go free or be forced to return to their cell. The first person to post at the end of combat may take this role, and must reprieve it immediately afterwards.
I should warn you that this is a roleplay where powerplaying is allowed, to a limited extent. The outcomes of your actions are not decided by yourselves, but by the fates. The fates indicate what action must take place by issuing commands with a number, from 1-6. The white combatant is assigned the numbers 1-3, and the black combatant is assigned numbers 4-6. The extremes (1 & 6) are considered to be the highest numbers while the middle numbers (3 & 4) are considered to be the lowest. With this in mind, the higher your number, the better your attack. This will make sense if you think about it:

A = White and B = Black, in this case. As you can see, it basically works like a mirror.
To clarify:
3/4: A light wound is a superficial wound that does little damage (eg: cuts, bruises, etc.), but can build up over time. Taking three light wounds in a single fight will count as one heavy wound, due to blood loss or other complications.
2/5: A heavy wound is a serious and disabling injury (eg: broken arms, ruptured organs, etc.), which can also build up over time. Taking three heavy wounds in a single fight will cause your character's body too much strain, resulting in them collapsing and dying (note: in this scenario your opponent still wins, but they do not get to kill you).
1/6: An instant kill is exactly what it sounds like.
Think of it like an older video game, like Zelda, where you have hearts to worry about rather than health bars:

A light wound takes out a little piece of heart, a heavy wound takes out a whole heart and an instant kill takes out all three.
So basically two people post to introduce their characters, and then somebody else (ie: the fates) post to announce what will happen. The fates are welcome to be as lengthy or as blunt as they like with their decision, but they must end their post with a number that designates their desired outcome. Eg:
<blockquote class='quote_blockquote'><dl><dt>Fates</dt><dd> </dd></dl><div>The fates laugh at the foolish mortals and their frivolous antics. They decide that it is time that the Monkey caused some serious damage to the Banana.
2[/quote]
The two combatants will then roleplay the outcome. In the case of this example, Monkey would deal Banana a grievous wound, which they cannot avoid. Monkey would have the first post, since they must attack, and then Banana would post their reaction. For example:
<blockquote class='quote_blockquote'><dl><dt>Monkey example</dt><dd> </dd></dl><div>A Monkey picks up a fresh looking banana and takes a bit out of it. It chews thoughtfully on the sweet mushy food, confident that this will be an easy victory.[/quote]<blockquote class='quote_blockquote'><dl><dt>Banana example</dt><dd> </dd></dl><div>The Banana screams uncontrollably, in immense pain as it is being eaten alive... or at least, it would scream, but unfortunately, lacking vocal chords, it must instead suffer in agonizing silence.[/quote]
The fates would then post once more, and we'd keep going from there. The same person can post as the fates multiple times should they wish to do so, but they must wait for combatants to post between each of their commands. You cannot line up commands for combatants to follow, they must be given one at a time.
Once a combatant has emerged victorious, it is the aureate emperor's time to shine. The golden monarch simply decides whether the victor lives or returns to their cell, after which the next fight may start. For example:
<blockquote class='quote_blockquote'><dl><dt>Aureate emperor</dt><dd> </dd></dl><div>The aureate emperor smirks, greatly amused by the upset. He would never have predicted that a Banana could defeat a Monkey, and yet that was exactly what had just taken place. Truly, this Banana was a hardened warrior; tough and tenacious... just the sort of combatant he wanted to see fight here again.
<big>"The combatant is to be returned to their cell!"</big> He proclaimed, raising his hand in an authoritarian, 'make it so' manner. <big>"Let the next fight commence!"</big>[/quote]
Keep in mind that this is meant to be a fairly light-hearted, if somewhat violent, roleplay. Powerplaying is meant to be lax here, and characters are meant to die.
<blockquote class='quote_blockquote'><dl><dt>Rules!</dt><dd> </dd></dl><div>1. Obey the fates and the emperor! Do as they say; if it says you must attack, attack. If it says you take a hit, take a hit.
2. Two combatants at a time, one white and one black. This should go very quickly so don't worry too much about this.
3. Enter as many times as you like with as many characters as you like.
4. The fates (a team made up of anybody not a combatant) may post once after both the white and black combatants have posted (so effectively once combat begins every third post will be by the fates).
5. The aureate emperor (the second team made up of anybody not a combatant) posts once after one of the combatants dies.
6. Collusion (ie: secret agreements between combatants and the fates/the emperor) is not encouraged, but allowed. If it gets to be a serious problem though I might have to change this rule.
7. You don't have to post using a whole bunch of colours like I did if you don't want to
