It is preferred that potions and enchantments are not to be used, given that it allows high ranking players to have an unfair advantage over newer participants. Not to mention how expensive it would be to supply every participant with equal tier armor. The battle is meant to  be a fight between people using equal gear. While, true, many will die quickly, we mean for these battles to be extensive because of the mass amount of participants. Also we may set warps for deceased players to re run, like a game of capture the flag or domination.