Hello dude! I wish setup in my server some arenas with mob spawn in waves (like the classic mob arena) but I want for example, buy some stuffs or kit during an arena sessions with things that monsters will drop. I've already tried http://dev.bukkit.org/bukkit-mods/mobarenasimple/ but it's not what I looking for Thanks for your help and for my very bad english Good work!
Use this plugin: http://dev.bukkit.org/bukkit-mods/mobarena/ Search up a video on youtube how to set it up