Welcome to Gaia! ::

No leaving the arena. The arena itself, which actually sits below ground level, spans three hundred feet in diameter with walls one hundred feet high before the stands begin. The floor of the arena is sprinkled with just enough sand to cover up the stones beneath, but not enough to be significantly detrimental to footing or traction. Gates at the northern and southern end lead into the arena, through which contenders will enter upon being summoned from their quarters in order to compete in the designated match. In the center of the arena is the symbol of a sword. Not leaving the arena includes no teleportation, no burrowing more than ten feet below arena floor, and no jumping, hovering, or flying higher than three hundred feet. Should a fighter be driven through the floor more than ten feet or thrown higher than three hundred feet into the air by his opponent, said opponent is awarded the win via ring-out. Being thrown out of the colosseum by any other manner, such as through the walls, also constitutes a ring-out. Teleportation includes any form of disappearing and reappearing. Leaving the material plane, shadowporting, turning into air, and related methods of movement--even for a nanosecond--are considered illegal and are offenses up for disqualification.

Heh, I'll let someone else deal with Ertai.