As you might have guessed, this battle is related to the shield of wonder. Just that, every PC will have a shield of wonder. And that he can't remove it. So yeah, good luck.
The rules are:
You start as a level 5 character, with equipment worth no more than 5,000 GP. You can pick any class from the PHB, other classes must be first talked with me. Any race that have no level adjustment is available. (That includes monstrous races).
Note however, that the shield is permanently attached to your hand, giving you normal penalties and arcane spell failures APPLY. Think twice before picking a wizard...
Multiclassing is okay.
Use 32 point but for stats.
Note that this is a battle-only, so you don't have to do skills (But you can, if you want too) and things like that.
Each arena will have 3-5 people (Depends on number of sign ups) and after every fight the winner will go to the finals. From which only 1 will win.
Everyone can sign up, no one get chosen randomly, no first come first get, just sign up.