I can get my item to drop but I'm trying to make the item rare and not drop all the time. Here's my code, what should I do to make the drop happen, say 5% of the time * the level of Looting?

 

http://pastebin.com/LhYsypKX

5% -> Random(20) == 0.

 

5% * Looting -> Random(20) <= Looting

 

Mathemagic

You also have to make sure that you actually reference the looting level stored in the event, not just your level, which is just initiated at 0.

 

so you would have something like

Random rand = new Random(); // since there is none supplied
if(rand.nextInt(20) == 0 && event.lootingLevel > 0)
{
    event.entityLiving.dropItem(My_Items.SuperRareEgg, event.lootingLevel);
}