Post on minecraft forums I have been building a mod for single player minecraft and I would like to convert it to a bukkit plugin. The basic idea is a team of players have 1-4 days to gather resources for life underground. each day the plant life and water are disappearing on the last day anything out in the sun are set on fire. To make this work I tweaked the code used to form ice and snow to randomly destroy the world. I'm not sure how to randomly trigger world changes from a plugin.