SimpleCountdown is a highly configurable plugin to start countdowns on your Server.
Using the command /countdown you get a little information about the plugin. That is the only part of this Plugin not configurable. Using /command <eventName> <time> EventName is a small String that explains what will start after the countdown finished.
Time can be used in two ways
/countdown &aItem Drops at Spawn! 5m
Now the plugin will write every full minute and when the timer is below the cap (Configurable) every second will be printed out.