MobCatcher

MobCatcher
MobCatcher is a Bukkit plugin utilized in the PixelLife world. The link to the plugin site and more information regarding the plugin can be found at this link: http://dev.bukkit.org/bukkit-plugins/mobcatcher/

Use
Using MobCatcher is fairly simple. You first need to have at least 5 redstone dust in your inventory. This is the cost of capturing a mob, and the dust will be consumed when the mob is caught. To capture a mob, all you need to do is punch the mob once with an egg. This will trap the mob inside of the egg, and assign all of the mob's data (including health and other info, such as color) to the spawn egg. Players now have an effective way to store mobs for later use, or trade them to other players. All mobs can be captured except for the EnderDragon.

Tip: You can sell spawn eggs in a single ChestShop as long as the eggs have the same data. This is done by holding the spawn egg in your hand and using the command /iteminfo and putting the numbers (which will look something like 383:91#a) on the fourth line of the ChestShop sign. Yes, technically you could start a "pet store".

Although hostile mobs are not enabled on the server, for the month of October they were turned on, by request, in the "spirit" of Halloween. If you ask around, you might find a player who still has hostile mob spawn eggs. Don't expect them to be cheap.